Which astronomer supported the belief that earth was at the center fo the universe?

a. Kepler

b. Ptolemy

c. Brahe

d. Hubble

In outer space, where there is no gravity or air resistance, an astronaut pushes on two moon rocks, using 12N of force on each. One rock has a mass of 2 kg, the other has a mass of 4 kg. Which statements are true? (Mark all true statements) A.

Energy from the Sun and energy from food are just different forms of the same thing. Question 20 options: True False

The mass of an object is determined by: weighing the object with a scale multiplying the height, width, and length measuring the object with an equal-arm balance using the water displacement method

A runner starts from rest and accelerates uniformly to a speed of 8.0 meters per second in 4.0 seconds. The magnitude of the acceleration of the runner is O 32 m/s/s o 9.8 m/s/s O 2.0 m/s/s O 0.50 m/s/s

What part of an atom exists in areas of probability outside the nucleus? neutron electron proton photon

How long can you keep string cheese in the fridge?

A particular motor can provide a maximum torque of 110 n • m. assuming that all of this torque is used to accelerate a solid, uniform, cylindrical flywheel of mass 10.0 kg and radius 3.

Round your answers to one decimal place. This parallel circuit has two resistors at 15 and 40 ohms. What is the total resistance? Ω If there is a 12 V battery in the circuit, what would the approximate current be? A

Energy transfer by convection is usually restricted to what type of substance?

Choose all that represent ways that Venus is different than Earth. a. The atmosphere of Earth is thicker than Venus b. Only Earth's atmosphere traps heat c. The atmosphere of Venus is thicker than Earth's. d.