A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 2.7 m/s. The acceleration of gravity is 9.81 m/s^2.

What is the initial height of the bob? Answer in units of m.

Which scenario represents the weakest force? (Assume particles in all scenarios are the same distance apart.) Protons and neutrons are held together inside the nucleus. Two particles are attracted to one another by static electricity.

Force F acts between two charges, q1 and q2, separated by a distance d. If q1 is increased to twice its original value and the distance between the charges is also doubled, what is the new force acting between the charges in terms of F?

In a period of 1.00 s, 5.00 x1023 nitrogen molecules strike a wall with an areaof8.00 cm2. If the molecules move with a speed of300 m/s and strike the wall head on in elastic collisions, what isthe pressure exerted on the wall?

How many milliliters are in ten grams of gasoline

Find the x-component of the electric field at the origin due to the full arc length for a charge of 4.5 µc and a radius of 0.55 m. the value of the coulomb constant is 8.98755 * 109 n · m 2 / c 2. answer in units of n/c

What happens to the volume of solids, liquids, and gases when they are heated. Devise your own chart for your answer.

Which chemical compounds absorb large amounts of the sun's energy in the atmosphere? Select one: a. Nitrogen compounds, water vapor, and carbon compounds b. Carbon dioxide, water vapor, and dust c. Methane, nitrogen compounds, and dust d.

As protostars continue to contract, their cores become hotter and more dense until what process begins ...

Emily jogs 3 laps at the track to warm up. She jogs at 5 mph. Then she runs 3 more laps at 7 mph. What is true about her average speed and her average velocity?

Which of the following elements are the most reactive? beryllium, calcium, magnesium, barium?