Nguyễn Đức Minh
(nguyenducminh10L1)
New Member
Thi lý nhân ba à
Chết rồi
((
Trước khi thi các cu có đi đâu kô???
Ra Đạt học bù đi
Chết rồi
((Trước khi thi các cu có đi đâu kô???
Ra Đạt học bù đi
L1 0508:)>-:)>-....let's go :)):))
- Bắt đầu ttrang
- Ngày bắt đầu
- Tình trạng
Nguyễn Đức Minh
Nguyễn Đức Minh
(nguyenducminh10L1)
New Member
Hk 2 tao ăn chốt toàn tập rồi
Chưa bao giờ đau khổ như Hk này
Hạ Hk
Kô dc 6.5 văn
Lý thấp tè tè
Thời oanh liệt nay còn đâu...........(
Chưa bao giờ đau khổ như Hk này
Hạ Hk
Kô dc 6.5 văn
Lý thấp tè tè
Thời oanh liệt nay còn đâu...........
(
Nguyễn Đức Minh
(nguyenducminh10L1)
New Member
M. 267. Place a cuboid-shaped, soft, dry sponge to a horizontal tabletop, such that its greatest face is on the table. Put a sheet of cardboard to the top of the sponge and load it gradually. How does the compression of the sponge depend on the load? Then gradually cease the loading. What can be observed? Repeat the experiment with sponge-balls.
Problems sign 'P'
Deadline expired.</B< P>
P. 3864. It takes a certain time for a cylinder to slide down without slipping on an inclined plane with friction. Using energy methods decide whether the cylinder would slide down during shorter or longer time if there was no friction.
(3 points)
P. 3865. The speed of an object undergoing uniform circular motion is 4 m/s. The magnitude of the change in the velocity during 0.5 is also 4 m/s. Find the angular velocity, and the centripetal acceleration of the object. What is the radius of the circle?
(4 points)
P. 3866. Two small bodies of masses m1, and m2 are attached to the two ends of an ideal spring of spring constant D. The spring is stretched by l, and then the two bodies are released at the same time. Find the greatest speeds of the two masses, the amplitudes of their oscillations, and the frequencies. Friction is negligible. (Data: m1=1 kg, m2=2 kg, D=100 N/m, l=9 cm.)
(4 points)
P. 3867. An unstretchable string of uniform density and constant diameter is suspended at one of its ends and is hanging. At a length of L it breaks under its own weight. Is it conceivable that there is such shape of string which does not get broken under its own weight however long it is?
(5 points)
P. 3868. Two similar retorts are connected with a glass tube, and there is a mercury drop in the middle of the glass tube. In one of the retorts there is helium gas and in the other one there is nitrogen. The temperature and the pressure of the gases are both equal. The whole system is placed into hot water and initially the mercury drop moves towards the left and then it goes back to the middle position. Which retort contains which gas?
(4 points)
P. 3869. A sample of ideal gas is taken through the cyclic process shown in the figure. The temperature of the gas at state A is TA=200 K. At states B and C the temperature of the gas is the same. nhau.)
a) What is the greatest temperature of the gas during the cyclic process?
b) Graph the cyclic process in the T-V diagram.(4 points)
P. 3870. Some part of a light beam enters into a spherical water-drop. After refraction and then two reflections at the internal boundary of the drop the light beam leaves the drop at the same point where it entered initially. Find the angle between the initial incident and the final refracted ray. The refractive index of water is n=1.33.
(4 points)
P. 3871. The strengths of the gravitational field of a spherical planet of uniform density at a depth and at a height of h are the same. (Both distances are measured from the surface of the planet.) Find the ratio of the gravitational potentials at these places.
(5 points)
Statistics
P. 3872. Two coils are placed to the same closed iron core. The number of turns of the two coils are equal, and the sense of their winding is a) the same, b) opposite. The switch, which has been closed for a long time, is suddenly opened. Find the current in the different branches right after turning off the switch (see figure).
(5 points)
P. 3873. An particle of energy 6.00 MeV was emitted by the nucleus of a 218Po, and passed the nucleus of a copper atom, and was deflected by an angle of 5o. What is the smallest distance between the particle and the nucleus of the copper atom?
(5 points)
đây là đè komal của ông q bảo ý
Có mấy cái hình ai hỏi thì tao vứt cho
Problems sign 'P'
Deadline expired.</B< P>
P. 3864. It takes a certain time for a cylinder to slide down without slipping on an inclined plane with friction. Using energy methods decide whether the cylinder would slide down during shorter or longer time if there was no friction.
(3 points)
P. 3865. The speed of an object undergoing uniform circular motion is 4 m/s. The magnitude of the change in the velocity during 0.5 is also 4 m/s. Find the angular velocity, and the centripetal acceleration of the object. What is the radius of the circle?
(4 points)
P. 3866. Two small bodies of masses m1, and m2 are attached to the two ends of an ideal spring of spring constant D. The spring is stretched by l, and then the two bodies are released at the same time. Find the greatest speeds of the two masses, the amplitudes of their oscillations, and the frequencies. Friction is negligible. (Data: m1=1 kg, m2=2 kg, D=100 N/m, l=9 cm.)
(4 points)
P. 3867. An unstretchable string of uniform density and constant diameter is suspended at one of its ends and is hanging. At a length of L it breaks under its own weight. Is it conceivable that there is such shape of string which does not get broken under its own weight however long it is?
(5 points)
P. 3868. Two similar retorts are connected with a glass tube, and there is a mercury drop in the middle of the glass tube. In one of the retorts there is helium gas and in the other one there is nitrogen. The temperature and the pressure of the gases are both equal. The whole system is placed into hot water and initially the mercury drop moves towards the left and then it goes back to the middle position. Which retort contains which gas?
(4 points)
P. 3869. A sample of ideal gas is taken through the cyclic process shown in the figure. The temperature of the gas at state A is TA=200 K. At states B and C the temperature of the gas is the same. nhau.)
a) What is the greatest temperature of the gas during the cyclic process?
b) Graph the cyclic process in the T-V diagram.(4 points)
P. 3870. Some part of a light beam enters into a spherical water-drop. After refraction and then two reflections at the internal boundary of the drop the light beam leaves the drop at the same point where it entered initially. Find the angle between the initial incident and the final refracted ray. The refractive index of water is n=1.33.
(4 points)
P. 3871. The strengths of the gravitational field of a spherical planet of uniform density at a depth and at a height of h are the same. (Both distances are measured from the surface of the planet.) Find the ratio of the gravitational potentials at these places.
(5 points)
Statistics
P. 3872. Two coils are placed to the same closed iron core. The number of turns of the two coils are equal, and the sense of their winding is a) the same, b) opposite. The switch, which has been closed for a long time, is suddenly opened. Find the current in the different branches right after turning off the switch (see figure).
(5 points)
P. 3873. An particle of energy 6.00 MeV was emitted by the nucleus of a 218Po, and passed the nucleus of a copper atom, and was deflected by an angle of 5o. What is the smallest distance between the particle and the nucleus of the copper atom?
(5 points)
đây là đè komal của ông q bảo ý
Có mấy cái hình ai hỏi thì tao vứt cho
Chỉnh sửa lần cuối:
Nguyễn Đức Minh
(nguyenducminh10L1)
New Member
có 2 bài đề
Problems sign 'M'
Deadline expired.</B< P>
M. 268. The blade of a simple hacksaw is usually about 3 cm long and at its ends there are small holes. Connect the two ends of the blade with pieces of strong strings of different lengths. How does the bending of the blade (y) depend on the distance between the holes x? Measure how does the tension in the string depends on the distance x.
(6 points)
Problems sign 'P'
Deadline expired.</B< P>
P. 3874. Explain how a level works. Instead of a level can we use any tube filled with water and having a small bubble in it?
(3 points)
P. 3875. Why does the refrigerator turn on more times in summer than in winter?
(3 points)
P. 3876. You can barely hear if you clap your hands in knitted gloves. Why? What causes the sound when you are clapping?
(4 points)
P. 3877. The planes in airports are pulled by small lorries loaded by heavy concrete blocks. What is the greatest acceleration of a lorry of mass m if it pulls a plane of mass 70 tons. Find the least mass of the lorry which is able to move a plane of mass 70 tons, if the coefficient of static friction on wet concrete is 0.4 and on dry concrete is 0.8, and the coefficient of rolling friction is 0.02.
(4 points)
P. 3878. A right circular cone shaped funnel rotates about its vertical symmetry axis at an angular speed of =10 s-1. What is the position of that small object which rotates together with the funnel? Data: 0=0.2; half of the vertex angle of the cone 30o.
(4 points)
P. 3879. One end of a chord is attached to a small body which undergoes circular motion on a horizontal frictionless table. There is a hole on the table at the centre of the circle, the chord goes through the hole and the other end of the chord is held by our hand. Pulling this end the body moves from the path of radius r1 to another path of radius r2. By what factor does the kinetic energy of the body change? By what factor does the tension change?
(4 points)
P. 3880. A space-shuttle revolves around the Earth along an elliptical path, the smallest distance between the Earth and the shuttle is 6870 km (measured from the centre of the Earth), the speed of the shuttle at this position is 10 km/s. a) What is the greatest distance between the shuttle and the Earth (measured from the centre of the Earth)? b) What is the least speed of the shuttle?
(4 points)
P. 3881. Two similar inlined planes are attached to each other such that their edges at the bottom touch each other. A small uniform disk of radius r is placed to the inclined planes horizontally. The disk is moved out of its equilibrium position, and begins to oscillate without slipping. Find the period of the motion.
(5 points)
P. 3882. There is a sample of diatomic gas in a container (whose volume is constant). The temperature of this gas was increased greatly so some molecules fell into atoms (dissociated) and the pressure of the gas increased by a factor of 9.2 and the internal energy of the gas increased to a value of 8.24 times the original internal energy. a) What percent of the molecules dissociated? b) By what factor did the temperature of the gas (measured in Kelvins) increased?
(4 points)
P. 3883. During the fission neutrons are ejected with an initial speed of 2.107 m/s. We would like to slow down these neutrons in heavy water to a speed of 103 m/s. At least how many collisions must occur?
(4 points)
----------
Mấy cái này dịch kô khó lắm
Con l với P là dịch siêu nhất
Bon mày chờ nó ý
Tao dịch đc 1 ít, mấy bài cơ nhiệt
Còn điện thì chịu:-s
Problems sign 'M'
Deadline expired.</B< P>
M. 268. The blade of a simple hacksaw is usually about 3 cm long and at its ends there are small holes. Connect the two ends of the blade with pieces of strong strings of different lengths. How does the bending of the blade (y) depend on the distance between the holes x? Measure how does the tension in the string depends on the distance x.
(6 points)
Problems sign 'P'
Deadline expired.</B< P>
P. 3874. Explain how a level works. Instead of a level can we use any tube filled with water and having a small bubble in it?
(3 points)
P. 3875. Why does the refrigerator turn on more times in summer than in winter?
(3 points)
P. 3876. You can barely hear if you clap your hands in knitted gloves. Why? What causes the sound when you are clapping?
(4 points)
P. 3877. The planes in airports are pulled by small lorries loaded by heavy concrete blocks. What is the greatest acceleration of a lorry of mass m if it pulls a plane of mass 70 tons. Find the least mass of the lorry which is able to move a plane of mass 70 tons, if the coefficient of static friction on wet concrete is 0.4 and on dry concrete is 0.8, and the coefficient of rolling friction is 0.02.
(4 points)
P. 3878. A right circular cone shaped funnel rotates about its vertical symmetry axis at an angular speed of =10 s-1. What is the position of that small object which rotates together with the funnel? Data: 0=0.2; half of the vertex angle of the cone 30o.
(4 points)
P. 3879. One end of a chord is attached to a small body which undergoes circular motion on a horizontal frictionless table. There is a hole on the table at the centre of the circle, the chord goes through the hole and the other end of the chord is held by our hand. Pulling this end the body moves from the path of radius r1 to another path of radius r2. By what factor does the kinetic energy of the body change? By what factor does the tension change?
(4 points)
P. 3880. A space-shuttle revolves around the Earth along an elliptical path, the smallest distance between the Earth and the shuttle is 6870 km (measured from the centre of the Earth), the speed of the shuttle at this position is 10 km/s. a) What is the greatest distance between the shuttle and the Earth (measured from the centre of the Earth)? b) What is the least speed of the shuttle?
(4 points)
P. 3881. Two similar inlined planes are attached to each other such that their edges at the bottom touch each other. A small uniform disk of radius r is placed to the inclined planes horizontally. The disk is moved out of its equilibrium position, and begins to oscillate without slipping. Find the period of the motion.
(5 points)
P. 3882. There is a sample of diatomic gas in a container (whose volume is constant). The temperature of this gas was increased greatly so some molecules fell into atoms (dissociated) and the pressure of the gas increased by a factor of 9.2 and the internal energy of the gas increased to a value of 8.24 times the original internal energy. a) What percent of the molecules dissociated? b) By what factor did the temperature of the gas (measured in Kelvins) increased?
(4 points)
P. 3883. During the fission neutrons are ejected with an initial speed of 2.107 m/s. We would like to slow down these neutrons in heavy water to a speed of 103 m/s. At least how many collisions must occur?
(4 points)
----------
Mấy cái này dịch kô khó lắm
Con l với P là dịch siêu nhất
Bon mày chờ nó ý
Tao dịch đc 1 ít, mấy bài cơ nhiệt
Còn điện thì chịu:-s
Nguyễn Đức Minh
(nguyenducminh10L1)
New Member
Tao còn đề toán nữa
Đứa nào càn thì post lên cho
Thằng võ kô cần nhưng mà sẽ có đứa cần
Mà còn để tao câu bài nữa
BÀI 4664 rồi:-?
------
Tao bảo rồi
Mấy bài này dịch kô khó đâu
Nếu kô biết từ thì chịu khó tra từ điển
hè có viêvj làm rồi=D> =D>
Mấy bài trong này kô khó quá đâu
vừa sức hoặc hơn 1 tí
Đứa nào càn thì post lên cho
Thằng võ kô cần nhưng mà sẽ có đứa cần
Mà còn để tao câu bài nữa
BÀI 4664 rồi:-?
------
Tao bảo rồi
Mấy bài này dịch kô khó đâu
Nếu kô biết từ thì chịu khó tra từ điển
hè có viêvj làm rồi=D> =D>
Mấy bài trong này kô khó quá đâu
vừa sức hoặc hơn 1 tí
Nguyễn Đức Minh
(nguyenducminh10L1)
New Member
Thằng Võ kô câu à
Câu với tao
Chú noob bảo câu mà mãi kô thấy lên
Chán thật(
Chắc nó bị warn 20% nên sợ rồi)
Mày warn nó hả võ??)
-----
Làm sao để tăng điểm chất lượng
Tao viết dài thế mà dek tăng đc điểm nào
Điểm chất lượng có bị trừ kô?
-----
Chiều thi Lý đứa nào mang cho tao đề cương toán
Tao làm mất ròi
----------
thằng qué gan thật:-?
đã bị warn mà còn dám viết bài ngắn thế[-x
hư quá[-x
Phải viết dài như tao đây nàyb-)
Hôm nay thi 3h30 đúng kô
Hôm qua tao đến muộn(
tưởng 1h30 thi
chả có đứa nào báo cho cả
Tao có lên mạng quái đâu
may mà bà anh trông hiền vãi
có mấy đứa quay như đúng rồi) ) )
Câu với tao
Chú noob bảo câu mà mãi kô thấy lên
Chán thật
( Chắc nó bị warn 20% nên sợ rồi
) Mày warn nó hả võ??
) -----
Làm sao để tăng điểm chất lượng
Tao viết dài thế mà dek tăng đc điểm nào
Điểm chất lượng có bị trừ kô?
-----
Chiều thi Lý đứa nào mang cho tao đề cương toán
Tao làm mất ròi
----------
thằng qué gan thật:-?
đã bị warn mà còn dám viết bài ngắn thế[-x
hư quá[-x
Phải viết dài như tao đây nàyb-)
Hôm nay thi 3h30 đúng kô
Hôm qua tao đến muộn
( tưởng 1h30 thi
chả có đứa nào báo cho cả
Tao có lên mạng quái đâu
may mà bà anh trông hiền vãi
có mấy đứa quay như đúng rồi
) ) )
Nguyễn Đức Minh
(nguyenducminh10L1)
New Member
Đào Trọng Hiệp đã viết:
Làm sao mà viết hay đc
Cứ câu thế này thì chắc ngàn đời kô lên đc điểm nào
(Thằng Võ đc 12 điểm kìa
tao thấy nó cũng câu thôi mà
Nguyễn Đức Minh
(nguyenducminh10L1)
New Member
Võ Tuấn Anh đã viết:Câu nghệ thuật thì nó thế
Ghen à
Mày cố viết bài chất lượng đi
Roài tao báo cáo cho các anh chị để + điểm cho mày
PS: nhớ đừng bao giờ đi xin điểm.
làm sao mà xin điểm được=P~
ơ thế xin ai
Xin ntn??
Trần Tuấn Anh
(omfgpro_spawn)
Điều hành viên
Thi lý x3 thôi à, tốt quá, tao tưởng tính theo kiểu : ( TBKT x2 + HK ):3
)
)
Trần Tuấn Anh
(omfgpro_spawn)
Điều hành viên
Bựa thế. TÍnh thử xem : (8.5x2 +4 ) :3 =7. Hi vong là đc ntn ^_^
Chỉnh sửa lần cuối:
- Tình trạng