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Q. Throughout a hard sneeze, your eyes may shut for 0.44s. If you are driving a car at 98 km/h during such a sneeze, how far does the car move during that time?
Q. A Carnot engine has an efficiency of 35 percent. If 325 J of heat are released into the environment every cycle, what should be the amount of heat absorbed by the high temperature reservoir?
A 12 kg weather rocket generates a thrust of 250 N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring constant is 560 N/m, is anchored to the ground. What is the rocket's speed while the s..
Find an equation for the change in wavelength of a scattered photon by Compton effect.
Six pendulums of mass and length are released from rest at the similar angle from vertical. Rank the pendulums according to the number of complete cycles of motion each pendulum goes through per minute.
Find out the angular momentum and angular speed of the disk. what is the magnitude of the force (in mN) between the two charges.
You & your friend peter are putting new shingles on a roof pitched at 25 degrees. You are sitting on the very top of the roof when peter, who is at the edge of the roof directly below you, 5.1m away, asks you for the box of nails. Rather than carr..
The leg and cast weigh 177N (w1). Find out the weight w2 and the angle α required so that no force is exerted on the hip joint by the leg plus cast.
A 19 g bullet is shot into a 5270-g wooden block standing on a frictionless surface. The block, with the bullet in it, acquires a velocity of 2.4 m/s. compute the velocity of the bullet before striking block.
How to find out potential energy
A 34 kg child on a swing 6,9 meters long is released from rest when the swing supports make an angle of 38,9 degrees with the vertical. Neglecting friction, find out the child's speed (m/s) at the lowest position to two decimal places. Use 9,8 m/s..
How much time take for the package to reach the ground.
A 10.0g bullet is fired horizontally into a 101g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 141 N/m. The bullet becomes embedded in the block. If bullet-block system co..
what time delay Delta t is necessary. A boxcar of mass 600 tons at rest becomes uncoupled on a 5.00 grade. If the track is considered to be frictionless, what speed does the boxcar have after 15 seconds.
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