A) A proton is fired from far away toward the nucleus of a mercury atom. Mercury is element number 80, and the diameter of the nucleus is 14.0 fm. If the proton is fired at a speed...

A) A proton is fired from far away toward the nucleus of a mercury atom. Mercury is element number 80, and the diameter of the nucleus is 14.0 fm. If the proton is fired at a speed...

4. Two closed organ pipes of length 0.5 m and 0.525 m are sounded together and produce 6 beats per second. What is the velocity of sound in the medium with which the organ pipes are filled...

A dolphin hears a 280 kHz sound with a wavelength of 0.51 cm. What is the wave's speed

1.If the rock were thrown from a cliff of height H' = 2H, the rock would land at a distance D' from the base of the cliff. Compare D and D'. D' = sqrt(2)D D' = 2D D' = 4D 2...

Michelle swings a 0.009-kg rubber stopper around her head. The rubber stopper is tied to a string that Michelle holds at 0.72 m while swinging it once every 0.5s. What is the minimum force she needs...

a hiker throws a ball horizontally from a hill 21.0 m high. The hiker's height is 1.750 m. The magnitude of the horizontal velocity is 7.0 m/s. Find the distance between the base of the hill and the...

The moon has an average radius of 1.74x10^6 m. A 68.kg person on the moon's surface weighs only 110 N. What is the mass of the moon?

Q: what type of force is gravity? Q: Two marbles are rolling horizontally on a table. The red marble travels at 1.22 m/s, while the blue marble travels at 1.67 m/s. If both roll off the table at the...

Michelle swings a 0.009-kg rubber stopper around her head. The rubber stopper is tied to a string that Michelle holds at 0.72 m with a force of 21. N. If she lets go of the string, what is the...

On a very wet and slippery rugby field a 120 kg halfback tackles a 90 kg second rower. Prior to the collision the halfback is slipping with a velocity of 5.6m/s south and the second rower is sliding...

A small car of mass 500kg is travelling at 120km/h when it hits stationary truck (of 1.5 tonne mass) head on. The small car rebounds and travels in the opposite direction at 40km/h. The collision...

A car of 1 tonne travels at a speed of 100km/h collides with a 3 tonne van travelling 20km/h in the same direction. After the collision the car rebounds at 20km/h. Calculate the impulse on the van...

A car (m=900kg) travelling at 70km/h hits a pedestrian (m=60kg) who is travelling at 1m/s in the same direction. After the collision the car has a velocity of 30km/h in the same direction it was originally...

A potential energy function can be specified for a dissipative interaction.

Rod with length L has net charge -Q distributed along its length. The rod is placed with one end at the origin and the other at point (0,L) on the y-axis. Find the components of the electric field...

Full Question: If an astronaut weighed 175 pounds on Earth, he would have weighed only 29 pounds on the moon. If his mass was 80 kg on Earth, what would his mass have been on the moon? Topic:...

The girl wishes to get off the bicycle while its still moving. She knows that if she puts her feet on the ground and stand up that she's likely to fall. Explain using physics principles why she is...

A 1500 kg car starts from rest, and rolls down a frictionless 5.09˚ slope that is 17.5 m long. How much time does it take to reach the bottom? Unit=s This is an example from my book,...

A 1.00 g sample of samarium emits alpha particles at a rate of 120 particles/s. The responsible isotope is 147 Sm, whose natural abundance in bulk samarium is 15%. Calculate the half life...

The meter was once defined as 1 650 763.73 wavelengths of the orange light emitted by a source containing krypton-86 atoms. What is the photon energy of that light?

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