A ball is thrown directly downward with an initial speed of 8.00 m/s, from a height of 30.0m. After what time interval does it strike the ground?

The mass of the parts is always ___ the mass of the whole when looking at nuclear masses.

At a certain altitude above the Earth's surface, the electric field has a magnitude of 135 V/m. How much energy is stored in 1.00 m3 of air due to this field?

A personal career profile form evaluates two sets of data

How does an atom of potassium-41 become a potassium ion with a + 1 charge? 19 K 39.10 A. The atom gains 1 proton, to make a total of 20. B. The atom loses 1 electron, to make a total of 18. C. The atom gains 1 proton, to make a total of 42. D.

Which of these is exhibiting kinetic energy?1) a rock on a mountain ledge2) a space station orbiting Earth 3) a person sitting on a couch while watching TV4) the high-energy phosphate bonds of a molecule of ATP5) an archer with a flexed bow

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.