True or false. when light passes from one medium to another the speed changes.

While on a moving elevator during a certain perfod or time, Frank's apparent weight is 620 N. If Frank's mass is 70 kg, what is the magnitude and direction of Frank's acceleration?

A small pickup truck that has a camper shell slowly coasts toward a red light with negligible friction. two dogs in the back of the truck are moving and making various inelastic collisions with each other and the walls.

What are the short eruptions of intense high-energy radiation from the sun's surface called? Corona Prominences Solar flares Sunspots

In a star, nuclear fusion occurs in the

A vertical wire carries current in the upward direction. An electron is traveling parallel to the wire. What is the angle ααalpha between the velocity of the electron and the magnetic field of the wire? Express your answer in degrees.

A car traveling on a flat (unbanked), circular track accelerates uniformly from rest with a tangential acceleration of 1.85 m/s2. The car makes it one quarter of the way around the circle before it skids off the track.

A train travels 120 km in 2 hours and 30 minutes what is the average speed

How many constellations are there?

What units are given to the right of the equals sign

Vector has a magnitude of 5.2 units and is directed east. vector has a magnitude of 4.3 units and is directed 35° west of north. by constructing vector diagrams, find the magnitudes and directions of (a) and (b) 4. (a)