A 100 g lump of clay hits a wall at 70 cm/s and sticks. A 100 g rubber ball hits the same wall at 60 cm/s and rebounds with a speed of 30 cm/s. Which object experiences the larger impulse delivered by the wall during the collision?
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The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes it 0.90 s to reach the floor. What is the mass m of the other block? The pulley has no appreciable mass or friction
A) 60 kg B) 54 kg C) 48 kg D) 42 kg
The ______________ surrounds the nucleus of a comet
Fill in the blank(s) with correct word
If more field lines leave a closed surface than enter that surface, then
A. a net positive charge is contained inside the surface. B. a net negative charge is contained inside the surface. C. an error has been made since the number of field lines entering a surface must equal those leaving the surface. D. an operating electron gun is inside the surface. E. there must be a charge on the surface.
Saturn’s rings look bright because __________.
a. light from the Sun reflects off the material in the rings b. the material in the rings is hot and creates its own light c. light from Saturn reflects off the material in the rings