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1. A tennis ball of mass m = 0.060 kg and speed v = 25 m/s strikes a wall at a 45-degree angle. It rebounds with the similar speed, once again at a 45-degree angle. What is the magnitude of the momentum impulse (in Ns) that the ball gave the wall?
2. A block of mass 82 g floats on a fluid, oscillating up and down at a frequency of 7.2 Hz. What is the value (in N/m) of the effective spring constant of the fluid?
At each point on the surface of the cube shown in Fig. 23-27, the electric field is parallel to the z axis. The length of each edge of the cube is 3.2 m. On the top face of the cube the electric field is in the negative z direction and has a magni..
Astronauts walking on the Moon are seen "bounding" rather than walking normally. Why?
Two objects attract each other gravitationally with a force of 2.3×10-10 when they are 0.65 apart. Their total mass is 5.0 . Find out their individual masses.
one way to decrease your use of fossil fuels is to heat your water via solar radiation. a solar water heater runs cold
Block 1, mass m, slides from rest down the inside of a bowl shaped container, starting from a vertical height h. The surface of the container is frictionless. To what vertical height does the combined mass slide
The coefficient of kinetic friction between the 2.00KG and the 3.00KG blocks in 0.300. The horizontal surface and the pulleyes are frictionless, determine the acceleration of each block
Two narrow slits separated by 0.51 mm are illuminated by monochromatic light of wavelength 670 nm. How many bright fringes can be seen on a screen 1.3 cm wide placed 1.1 m in front of the slits.
Three charged particles are placed at each of three corner of an equilateral triangle whose sides are of length 2.5 c.m. What is the net electric force acting on particle
It is possible to use electromagnetic radiation to ionize atoms. To do so, the atoms must absorb the radiation, What is the longest radiation wavelegth
A 1400 kg car carrying four 92 kg people travels over a "washboard" dirt road with corrugations 4.5 m apart. by how much does the car body rise on its suspension
a force of 8n acts on an object on a frictionless horoizontal surface. the force acts in a vertical plane at an angle
a 750g mass traveling at 8m/s undergoes a head on elastic collision with a 50g mass traveling towards it at 8m/s. What is the speed of the 50g mass after the collision
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