You throw a stone vertically upward with an initial speed of 6.4 m/s from a third-story office window.

A) Find the speed of the stone just before it hits the ground.

Hint: the time is 2.3 s

Decreases efficiency by causing an energy loss to the environment? A. cooling B. Friction C. Working input D. Potential energy

A coil of wire with 100. circular turns of radius 8.00 cm is in a uniform magnetic field along the axis of the coil. The resistance is 40.0 O. At what rate, in teslas per second, must the magnetic field be changing to induce a current of 0.

A capacitor that is initially uncharged is connected in series with a resistor and an emf source with E = 120 V and negligible internal resistance. Just after the circuit is completed, the current through the resistor is 6.7*10-5 A.

The higher the temperature of the conductor, the lower the resistance. True or false?

When several radio telescopes are wired together, the resulting network is called a radio a. Receiver b. Interferometer c. Tuner d. Antenna

The process of changing the energy of a system by means of force. Force * Diatance

A gnat takes off from one end of a pencil and flies around erratically for 18.6 seconds before landing on the other end of the same pencil. If the gnat flew a total distance of 7.15 meters, and the pencil is 6.

An apple falls from an apple tree growing on a 20° slope. the apple hits the ground with an impact velocity of 16.5 m/s straight downward. what is the component of the apple's impact velocity parallel to the surface of the slope?

Objects falling through the air experience a type of friction called air resistance. true or false

How big is a wifi pulse signal coming from your router? A) 10 meters B) 15 meters C) 5-10 meters D) 20-30 meters