During a total lunar eclipse, the moon

a. moves into earth's umbra.

b. moves outside earth's shadow.

c. moves into earth's penumbra.

d. moves into the sun's umbra.

Which of the following is a disadvantage associated with scientific advances? a. decreased urbanization b. increased energy efficiency c. increased waste production d. increased renewable resource use

In hydroelectric dams, gravitational potential energy is used to produce electrical energy. What is the mass of water that must fall over a dam that is 12 m high in order to produce the same amount of energy in an AA battery (10,800 J) ?

Negative changes in family life always leads to abuse. True or False

0.005 kg of copper was heated from 20°C to 80°C. How much energy was used to eat Cu? (Specific heat capacity of Cu is 385 J/kg °C)

What part of the Milky Way allows for determination of its rotational direction? A. Celestial body B. Galactic body C. Galactic disk D. Two long tails

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching

Can an animal survive being hit by a car going 60 mph

A balsa wood raft is 1.50 m long, 1.00 m wide, and 0.120 m high. the density of balsa is 380 kg/m^3. what is the mass of the raft? (unit=kg)

What is the difference between longitudinal and transverse waves?

Which is an example of transforming potential energy to kinetic energy? Select two options. a changing thermal energy to electrical energy b changing chemical energy to thermal energy c changing nuclear energy to radiant energy d changing radiant