Which unit do astronomers use for angular measurement?

A. parallax

B. arcsecond

C. parsec

D. light-year

A square loop of wire is held in a uniform 0.24 T magnetic field directed perpendicular to the plane of the loop. The length of each side of the square is decreasing at a constant rate of 5.4 cm/s.

Two 2.0 g plastic buttons each with + 40 nC of charge are placed on a frictionless surface 2.0 cm (measured between centers) on either side of a 5.0 g button charged to + 250 nC. All three are released simultaneously. a.

A man on the moon throws a ball vertically upwards and it is noticed that the ball travels 3.0m less in the fifth second of its upward motion than it does in the third second. What is the acceleration due to gravity on the moon?

5. What is the speed of a wave that has a frequency of 600 Hz and a wavelength of 2 m? Show the steps you used to solve this problem.

How does vacuum reduce thermal energy transfer

Theories and Laws. • How are they alike? • How are they different? • Can you explain why scientific theories will change over time? • Give an example of a scientific theory that has changed.

If the x-component of a force vector is 5.17 newtons and its y-component is 8.80 newtons, then what is its magnitude?

Scientific theories have strod the test of time and will not change

An 8 kilogram bowling ball is rolling in a straight line toward you. if its momentum is 16 kg * m/s, how fast is it traveling?

Explain why a moving object can be in equilibrium