Day and night are caused by

a. the tilt of Earth's axis.

b. Earth's revolution around the sun.

c. eclipses.

d. Earth's rotation on its axis.

If the weight of the bowling ball acts down with a force of 200 N, what force would the table need to push up with to keep the bowling ball from flying skyward or sinking into the table?

Which sound would be louder? A. a wave with an amplitude of 1.0 B. a wave with an amplitude of 0.1 C. a wave with an amplitude of 0 D. a wave with an amplitude of 0.5

Calculate the magnitude of the electric field 9.25 cm from the center of the sphere. Answer in units of N/C.

A person's temperature is 40°C What would it be in Kelvin?

1. Ca atomic number 2. H2O fission 3. nuclear decay element 4. nuclear synthesis fusion 5. η compound 6. positive charge electron 7. e neutron 8. number of protons in nucleus proton

Like matter, energy cycles continuously through an ecosystem. a. True b. False User: Like matter, energy cycles continuously through an ecosystem. True or False

A room is being accelerated through space at 7 m/s2 relative to the "fixed stars." it is far away from any massive objects. if a man weighs 500 n when he is at rest on earth, how much will he weigh in the room?

About what is Rigel's surface temperature?

A 75.2 kg ice skater, moving at 7.7 m/s, crashes into a stationary skater of equal mass. After the collision, the two skaters move as a unit at 3.85 m/s. Suppose the average force a skater can experience without breaking a bone is 4824 N.

Amy counts the wave crests traveling down a stretched string. Five wave crests pass Amy in two seconds. What is the frequency of the wave? A. 5.0 Hz B. 2.5 Hz C. 10 Hz D. 2.0 Hz