Consider the observation the andromeda galaxy, a member of our local group, is moving toward us. why doesn't this observation contradict the idea that the universe is expanding?

You are wearing earbuds or headphones to listen to your music but your family members can hear it as well. They tell you that it's too loud and to turn it down so you don't lose your hearing.

Which of the following best describes the size of an asteroid

A motor boat is headed at a velocity of 25 kilometers/hour toward the north, while the velocity of the water current is 12 kilometers/hour to the west. What is the magnitude of the boat's resultant velocity? A. 37.7 kilometers/hour B. 13.

What class of asteroids is a threat to earth and other terrestrial planets?

Which of the following pure elements exist as liquids at normal Earth temperatures? bromine nitrogen mercury gold oxygen

If a cheetah runs at 25 m/s, how long will it take a cheetah to run a 100 m dash?

A gardener pushes her 90 kg wheelbarrow in a straight line out of her garage and across the yard in 18 s. If her average velocity is 1.5 m/s, what is her displacement? A. 0.8 km B. 12 km toward the garden C. 18 m toward the garage D.

What is true about the refractive index of a medium? A. It increases with an increase in angle of incidence. B. It decreases with a decrease in angle of refraction. C. It decreases with an increase in angle of incidence. D.

A car accelerates from rest to 19 m/s in 6 seconds. What is the acceleration of the car?

An apparatus similar to the one used in lab uses an oscillating motor at one end to vibrate a long rope with frequency f = 40 Hz and amplitude A = 0.25 m. The rope is held at constant tension by hanging a mass on the other end.