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A projectile proton with a speed of 500 m/s collides elastically with a target proton initially at rest. The two protons then move along perpendicular paths, with the projectile path at 50° from the original direction.
(a) What is the speed of the target proton after the collision?
m/s
(b) What is the speed of the projectile proton after the collision?
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. The student now starts moving the box up a 10.0° incline, what is the new acceleration of the box
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 7 m and, in starting, rotates according to ? = 0.30t2, When t = 5.0 s, what is the magnitude of the astronaut's linear speed
A box with a mass of 6 kg is lifted (without acceleration) by a height of 6.0 m in order to place it upon the shelf of a closet.
A converging lens with a focal length of 30cm and a diverging lens with a focal length of -52cm are 127cm apart. Calculate the distance between image and diverging lens
A human being can be electrocuted if a current as small as 50 mA passes near the heart. what might the fatal voltage be
Ilya and Anya each can run at a speed of 8.40mph and walk at a speed of 3.00mph. Find Anya's average speed. How long does it take Ilya to cover the distance
During a particular car crash, it takes just 0.18 sec for the car to come to a complete stop from 50 km/hour. At what rate is the car accelerating during the crash
A convex lens with f1= 19.9 is mounted 40.0cm to the left of a concave lens. When an object is placed 30.8cm to the left of the convex lens, What is the focal length of the concave lens
A radio antenna broadcasts a 1.0 MHz radio wave with 29 kWof power. Assume that the radiation is emitted uniformly in all directions. (a) What is the wave's intensity 35 km from the antenna? I=___?___W/m^2 (b) What is the electric field amplitude at ..
A test rocket is fired straight up from rest with a net acceleration of 20 {{\rm m/s}}^{{2}}. What maximum elevation does the rocket reach
A river flows due east at 1.43 m/s. A boat crosses the river from south shore to the north shore by maintaining a constant velocity of 10.5 m/s due north relative to the water.
A large arm model was constructed with a free arm which weights 1 kg, an additional weight of 1 kg is supported by the arm at a distance of 12 cm from the pivot. What is the total torque of the resistance
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