How many electrons in Cu

A 19.0-μF capacitor and a 44.0-μF capacitor are charged by being connected across separate 45.0-V batteries. a. Determine the resulting charge on each capacitor. (Give your answer to at least three significant figures.) b.

Convert - 90.0°F to - 5.0°c to kelvin

Consider a no-friction 5.0 kg skateboard on a 15 degree ramp. If a 45 kg teenager jumps on, what would be her acceleration down the ramp? __m/s^2

What happens when a moving object encounters friction? A. Some of its kinetic energy is converted into thermal energy. B. Some of the energy is lost due to the friction. C. Some of its potential energy is converted into thermal energy. D.

A 39.5 kg child stands at the center of a 125 kg playground merry-go-round which rotates at 3.10 rad/s. If the child moves to the edge of the merry-go-round, what is the new angular velocity of the system? Model the merry-go-round as a solid disk

Two energy resources that do not depend on the sun's energy

How much heat is givne out when 6.0g of water freezes at 0 degrees celcius the heat of fusion of water is 80.0 cal/g?

Which statement describes why ocean currents are considered convection currents? A) Warm water moves counterclockwise in the northern hemisphere B) Warm water rises and cold water moves in to replace it.

What kind of waves require a medium to travel? Question 6 options: Light Waves Mechanical waves All waves need a medium to travel Electromagnetic waves

During takeoff, a plane accelerates at 4 m/s and takes 40 s to reach takeoff speed. What is the velocity of the plane at takeoff?