An element's atomic number is 50. how many protons would an atom of this element have?

A solid sphere is released from height h from the top of an incline making an angle θ with the horizontal. (a) Calculate the speed of the sphere when it reaches the bottom of the incline in the case that it rolls without slipping.

What nuclear physics means?

A pure musical torte causes a thin wooden panel to vibrate. This is an example of: A. An overtone B. Harmonics C. Resonance D. Interference

When a lion eats a zebra and then uses the energy from the zebra to run, the lion's body converts a) chemical energy to light energy b) chemical energy to kinetic energy c) electrical energy to chemical energy d) mechanical energy to chemical

What can you calculate using the equation: P=W/t? distance mass power time

8. A gas is contained in a horizontal piston-cylinder apparatus at a pressure of 350 kPa and a volume of 0.02 m3. Determine the work done by the piston on the gas if the cylinder volume is increased to 0.15 m3 through heating.

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?

The hinge at A and cable BDC support beam ABC. Cable BDC passes over the pulley D that is pinned to the ceiling. (Assume that the + x-axis is to the right and the + y-axis is up along the page.

The "zone of avoidance" a) Accounts for the absence of any planet between the orbits of Mars and Jupiter Prevents collisions between planets in the Solar System.

Electric current is ...