A certain reaction has an activation energy of 67.72 kJ/mol. At what Kelvin temperature will the reaction proceed 4.00 times faster than it did at 353 K?

When NASA's Skylab reentered the Earth's atmosphere on July 11, 1979, it broke into a myriad of pieces. One of the largest fragments was a 1770-kg lead-lined film vault, and it landed with an estimated speed of 120 m/s.?

Why is the reflection of a wave at a free boundary different from reflection at a fixed boundary?

A car is going 5m/s around a bend with a radius of 10m/s why is the accelerant?

In order for the Road Runner to escape Wily Coyote, he had to run a distance of 100m and accomplished his feat in 30seconds. What was his velocity in m/s and in km/h? What formula must be used?

A skateboarder has an average velocity of 5.0 m/s to the right. Does this mean that the skateboarder moves with a constant velocity of + 5.0 m/s? Explain.

The emf produced in a generator is Vemf = 25 sin 377t. What is the frequency of rotation of the circular coil? 50 Hz 60 Hz 25 Hz 15 HZ

If a 1.0-kg-mass block is on the left cap, how much total mass must be placed on the right cap so that the caps equilibrate at equal height?

By what factor would your weight be multiplied if the earth were1/2 as massavise and the diameter was unchanged

Why does it seem harder to start sliding a couch across a carpeted floor than it oes to keep it moving?

Energy due to the motion of an object is called