Adevice that initiates and maintains a controlled nuclear fission chain reaction to produce energy for electricity is a
a. geothermal nuclear apparatus.
b. nuclear combustion chamber.
c. nuclear reactor.
d. nuclear electric engine.
e. electrical fusion device

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

How do the kidneys affect homeostasis