A pendulum makes 40 vibrations in 20 seconds. Calculate the period?

Most elements on the left side of the periodic table are

1 A plane moving at 30m/s drops a load 200m down to the ground. How long did it take to hit the ground.

What particle is NOT located in the nucleus? A. proton B. electron C. neutron D. quark

Which type of modulation is used by remote-control toys? amplitude frequency phase pulse

Find the work w1 done on the block by the force of magnitude f1 = 95.0 n as the block moves from xi = - 5.00 cm to xf = 4.00 cm.

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.