if we could build rockets that could travel at the speed of light, how many years would it take for an astronaut to travel from the milky way to the andromeda galaxy

Suppose the sun shrank in size but its mass remained the same. what would happen to the orbit of earth?

A rigid container filled with a gas is placed in ice. What will happen to the pressure of the gas? And what will happen to the volume?

A 92.9 g piece of a silvery gray metal is heated to 178.0∘C, and then quickly transferred into 75.0 mL of water initially at 24.0∘C. After 5 minutes, both the metal and the water have reached the same temperature: 29.7∘C.

Where is the concentration of sunlight the greatest? A. The equator B. The South Pole C. The horse latitudes D. The North Pole

What does it mean for a substance to have a high reactivity?

Why cant a moving object come to an instantaneous stop?

If someone where to throw a eraser so it landed 5 meters away and at the exact same time someone just dropped an eraser which would hit the ground first?

Which of the following describes a car that is accelerating? A car going around a circular track at a steady 30 miles per hour A car driving on a straight uphill road at a steady 30 miles per hour.

A toy projectile is fired from the ground vertically upward with an initial velocity of 26.5 m/s. The project arrives at its maximum altitude in 2.7s. What is the velocity of the projectile when it hits the ground? How?

Which occurs when two musical instruments use resonance? A. One instrument is louder than the other. B. They are out of tune with each other. C. They are both quiet. D. They are both loud.