3. A hoop and a solid sphere are released from the top of a ramp at the same time. The objects have the same radius, but the mass of the sphere is 5M, while the hoop is M. The moment of inertia for the sphere is 2/5MR? and the hoop is MR?. a. Which object, if either, will reach the end of the ramp first? Explain your answer. b. Which object, if either, will have a greater rotational kinetic energy at the bottom of the ramp? Explain your answer.

Many people have some sense for the SI units describing mass, length, and time. one kilogram is roughly the mass of a typical sports water bottle (when full) one meter is roughly the height of a kitchen counter one second is a typical time interval between heartbeats (when at rest) But the momentum unit we just learned—the "kilogram meter per second"—is another matter! How many kg · m/s might describe the following everyday phenomena? (Recall that momentum equals the product of mass and velocity.) a 0.05 kg (50-gram) tennis ball crossing the court at 20 m/s (about 45 mph) _____________ kg · m/s a 50 kg (110-pound) teenager jogging at 2 m/s about 4 1 2 mph . _______________kg · m/s a two-ton SUV (2,000 kg) following a dirt road at 5 m/s (about 11 mph). ________________kg · m/s

A particle has a mass of 1.88E-28 kg and it travels at a speed of 0.971c, where c is the speed of light. What is the energy of the particle, expressed in MeV. Keep three significant digits

A particle initially has a speed of 0.37c. (Enter your answers in terms of c. Round your answers to at least three decimal places.) (a) At what speed does its momentum increase by 1%? 0.41 X с (b) At what speed does its momentum increase by 10%? (c) At what speed does its momentum increase by 100%?

Two protons are released from rest 15 mm apart. (a) Describe the subsequent motion after they’re released. (b) How fast are the protons moving when they’re a great distance apart?

In a television tube electrons are accelerated through a voltage of 5000 volts. What is the speed of the electrons assuming that they were initially at rest? (Since this is Physics 222, do not use special relativity to calculate the answer even though these speeds are a fraction of the speed of light.) Express your answer to the nearest km/s.

Classical physics is a good approximation to modern physics under certain circumstances. What are they?

I gave you a multiple choice question and you gave me an answer that wasn't even there...

I have asked kindly for answers to be in a manner that I understand. i do not understand Physics. Please explain to me what this is supposed to be in terms that I understand. Thank You. Pi=Pf0=×ばつv=×ばつ0.25v=×ばつ10-3v=426.25 m/s

why is mass (m) not being involved in the final equation?