How much work is done when a 48-kg stack of books are lifted 2m with a net force of 25 N?

A. 12.4 J

B. 100 J

C. 50 J

D. 96 J ... ?

Describe briefly one problem caused by the expansion of metals

What is the streak of a mineral used for? A. weighing the mineral B. measuring the hardness of the mineral C. identifying the mineral D. finding the volume of the mineral

Which of the following has the strongest magnetic field? Earth, the Sun, Jupiter, a pulsar

Fusion would be a better energy source than fission because it: yields less radioactivity is explosive conserves waterways prevents smog

A box is hanging from two strings. String #1 pulls up and left, making an angle of 50° with the horizontal on the left, and string #2 pulls up and to the right with a force of 30 N, making an angle of 75° with the horizontal on the right. 1.

The basic building block of life is

What is the reason for Mary's resemblance to her mother. Mary's relatives and friends feel she had her mothers feature

Is a balance scale used to describe how much matter is in an object

At distances greater than 2 femtometers, the nuclear strong force is stronger than (select all that apply): gravity electromagnetic forces nuclear weak force none of the above

Identifying the Functions of Parts of the Ear Which part of the ear changes sound to a signal that the brain can understand? Which part of the ear carries the signal to the brain?