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Question: A 13-kg block (M) is released from rest on a frictionless incline that makes an angle of 20°, as shown in the figure below. Below the block is a spring that has a spring constant of 13500 N/m. The block momentarily stops when it compresses the spring by 5.4 cm. How far does the block move down the incline from its rest position to the stopping point?
A geiger counter registers a count rate of 4,000 counts per minute from sample of a radiosotope. twelveminutes later the count rate is 1000 counts per minute. what is the half-life of the radiosotope?
Eight equal blocks are kept together side by side. A man exerts a horizontal force F on block 1(from the side). Find what is the ratio of the force exerted by block 1 on block 2 to the force exerted by block 7 on block 8
Water is pumped into a storage tank from a well delivering 15.0 gallons of water in 34.0 seconds through a pipe of 1.00 in.2 cross-sectional area.
An astronaut living at a space station is in a constant state of free fall- the only force exerted on her and on the space station is the gravitational force due to the Earth. How can an astronaut determine her mass while on an extended stay in sp..
The figure below shows a 6.4 kg rod of1.00 m in length, hinged to a vertical wall and supported by a thin wire. The wire and rod each make angles of 45° by the vertical. When a 10.0 kg block is suspended from the midpoint of the rod, the tension T in..
A sprinter of mass 72.8 kg runs at a constant speed of 10.8 m/s in a straight line. Find the extra force the sprinter must exert on the ground to round a curve of radius 10.4 m
A 7.1 nC charge is placed 1.7 meter from a 4.3 nC charge. Obtain the magnitude of the electrostatic force that one charge exerts on the other
Suppose there are two blackbodies with the same size and shape. Which of the blackbodies emits more power through radiation? How much more power
A convex mirror has a radius of curvature whose magnitude is 47 cm. The mirror is positioned on a horizontal optical bench with its front surface at 0 cm. A 6.0 cm long fluorescent lamp oriented vertically is placed at +103 cm. What is the focal l..
A 216-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 32.5° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.758, and the log h..
A steel cylinder of mass 4 kg contains 4 L of liquid water at 25 C degree at 100 kPa. Find the total mass and volume of the system
A 1.00kg mass is connected to a spring with a spring constant of 4.00 N/m. estimate the maximum velocity of the simple harmonic motion
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