How can we maximise the rate of energy transfer to keep things cool?

What is the kinetic energy of a 0.012 kg bullet traveling at 700 m/s? Remember the equation for kinetic energy is: Kinetic energy = - mºv2 A) 8.4 Joules B) 4.2 Joules C) 2940 Joules D) 35.3 Joules

X-rays are not part of the electromagnetic spectrum true or false

After walking across a carpeted floor in socks, Jim brings his finger near a metal doorknob and receives a shock. what does that demonstrate

Which of the following is of particular interest to scientists in their observations because of potential threats to the Earth? Meteors Dust Comets Near Earth Objects (NEOs)

What were the honeycomb units at which hooke was looking?

Technician A says that engine parts should be be cleaned before a thorough test can be done to detect cracks. Technician B says that pressure testing can be used to find cracks in blocks or cylinder heads. Who is right?

How are mathematics and science related?

Radio telescopes detect waves with a wavelength of roughly 10 m. True False

2. A 0.30 kg ball is dropped onto a concrete driveway. The ball's velocity before impact is 4.5 m/s and after impact is 4.2 m/s. What is the change in the ball's momentum?

If we start with 400 atoms of a radioactive substance, how many would remain after one half-life? After 2 half-lives? After 3 half-lives? After 4 half-lives?