What is the mass number of an atom with 3 protons, 4 neutrons, and 3 electrons

You are given two carts A and B. They look identical and you are told they are made of the same material. You place A at rest at an air track and give B a constant velocity directed to the right so that it collides elastically with A.

The note "Middle C" is known to have a frequency of 261.6 Hz. What would be the frequency of a note one octave higher?

The linear impulse delivered by the hit of a boxer in 104 N. s during the 0.431 s of contact. What is the magnitude of the average force exerted on the glove by the other boxer? Answer in units of N

An applied force varies with position according to F = k1 x n - k2, where n = 3, k1 = 3.6 N/m3, and k2 = 76 N. How much work is done by this force on an object that moves from xi = 5.41 m to xf = 21.9 m? Answer in units of kJ.

Explain why a steel block sinks but a steel ship floats

The nearest large galaxy to our own is about 2.5 million light-years away. how many meters is that

An automobile travels on a straight road for 25 km at 32 km/h. it then continues in the same direction for another 25 km at 64 km/h.

Why is it important for engineers to design bumper cars safely

What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 m wide and 9.00 m below the top of the cliff?

Which statement describes how light behaves when it strikes a translucent material? A. Light is scattered. B. Light is transmitted. C. Light is reflected. D. Light is absorbed.