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Starting from rest, two skaters "push off" against each other on smooth level ice, where friction is negligible. One is a woman and one is a man. The woman moves away with a velocity of +2.7 m/s relative to the ice. The mass of the woman is 61 kg, and the mass of the man is 81 kg. Assuming that the speed of light is 3.8 m/s, so that the relativistic momentum must be used, find the recoil velocity of the man relative to the ice.
What is average kinetic energy of each helium atom
How much time is the stone in the air
An infinite plane current sheet coincides with the xy plane. The surface current density is K'=K' y-hat where K'=const, Find the force per unit length on the wire
find the magnitude of the baseballs momentum.
A cockroach of mass m lies on the rim of a uniform disk of mass 3 m that can rotate freely about its center like a merry-go-round. find the angular velocity of the cockroach-disk system
The charges and coordinates of two charged particles held fixed in the xy plane are: q1=6.00 ?C, x1=6.700 cm, y1=4.600 cm, Find the direction and magnitude of the electrostatic force on q2
A charged cloud system produces an electric field in the air near Earth's surface. A particle of charge -1.7 x 10-9 C is acted on by a downward electrostatic force of 3.0 x 10-6 N when placed in this field. What is the gravitational force on the pr..
Vector A has a magnitude of 8 units and makes an angle of 45.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. (Using graphical methods), find (a) vector sum A + B and (b) vector diffe..
A freezer has a coefficient of performance of 6.30. The freezer is advertised as using 430 kW-h/y, On average, how much energy does the freezer use in a single day
Consider a regular hexagon of side length, L=10cm. A charge, Q=2uc, is located at each vertex(there are 6). find the electostatic potential at the center of the hexagon
If a curve with a radius of 85 m is properly banked for a car travelling 68 km/h, what must be the coefficient of static friction for a car not to skid when travelling at 97 km/h.
A tennis ball is hit with a vertical speed of 30 m/s and a horizontal speed of 25 m/s. How long will the ball remain in the air? How far will it travel horizontally during this time?
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