Mr. Polifka does a demonstration in science class. He holds an unlit match six inches above a candle flame. After a while, the match bursts into flame.

Electric energy is generated at a nuclear power plant using which type of nuclear reaction? A. A nucleus splitting to form two or more smaller nuclei B. Two nuclei giving off alpha particles C. Two nuclei joining to form a larger nucleus D.

On an essentially frictionless, horizontal ice rink, a skater moving at 5.0 m/s encounters a rough patch that reduces her speed by 40 % due to a friction force that is 22 % of her weight.

Question 3: how can an object have an acceleration? a.â the objectâs speed is decreasing b.â the objectâs speed is increasing c.â the object is changing direction d.â answers a. and b. are true, but not c. e) â answers a), b), and c. are all true

An advanced computer sends information to its various parts via infrared light pulses traveling through silicon fibers (n = 3.50). To acquire data from memory, the central processing unit sends a light-pulse request to the memory unit.

Suppose a child drives a bumper car head on into the side rail, which exerts a force of 3400 N on the car for 0.400 s. (Assume the initial velocity is in the positive direction.

7. Who is Mara Grunbaum?

How much work is done in holding a 10 newton sack of potatoes while waiting in line at the grocery store for 3 minutes.

Define light year and explain how and why light years are used to measure distances in the universe

A farmer had 15 sheep, and all but 8 died. How many are left?

While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds. If the boy and the scooter together have a mass of 30 kg, what is their final velocity? a. 2.