What is the input of energy for a device that provides 50 units of useful energy and has an efficiency of 0.55?

What is a rock that is full of tiny connected air spaces

What group makes muscle tissue In a body

What is the longitude of the middle of romano swamp?

A hollow sphere of negligible mass and radius R is completely filled with a liquid so that its density is rho. You now enlarge the sphere so its radius is 2R and completely fill it with the same liquid. What is the density of the enlarged sphere?

Check all that apply. An ammeter is used to measure current. An ammeter must be placed in parallel with a resistor to measure the current through the resistor. An ammeter has a large internal resistance. A voltmeter has a small internal resistance.

A tape dispenser is an example of which simple machine pulley lever inclined plane screw

A brick with a mass of 20 kg and a weight of 196 N is released on a frictionless plane at an angle of 30°. What is the acceleration of the brick? A. 4.9 m/s2 B. 5.6 m/s2 C. 8.5 m/s2 D. 9.8 m/s2

As light reflects off a mirror the angle between the incident ray and reflected ray of light is 50°. What is the angle of reflection?

In what part of the earth does convection occur?

13.00 cm + 2.56 mm + 0.0047 = cm? Solve problem with correct number of significant digits