What class is #29 MOD

A piece of purple plastic is charged with 8.23 * 10 6 extra electrons compared to its neutral state. What is its net electric charge (including its sign) in coulombs? net electric charge:

An object has a mass of 12kg. On Planet A, the object weighs 117.6 N. Is the force of gravity on Planet A equal to, less than or greater than the force of gravity on Earth?

I'm a given chemical reaction, the energy of the products is less than the energy of the reactants. Which statement is true for this chemical reaction?

Is the eccentricity of planet orbits closer to 1 or 0?

How many moles of MgCl2 are there in 337 g of the compound?

an athlete whirls a 7.00 kg hammer tied to the end of a 1.3 m chain in a horizontal circle the hammer moves at the rate of 1.0 rev/s what is the centripetal acceleration of the hammer

Relaying a message from a membrane receptor to a molecule that performs a specific function within a cell occurs when

Ultrasound consists of sound at frequencies most people can hear?

Ali has less mass flying in a jet high above the earth than when she stands on the surface of the earth. True False

A passenger jet flies from one airport to another 1,333 miles away in 2.2 h. Find its average speed in the mks system of units.