Olga is given a pure substance that reflects light. she has a mallet and a heat source. she will know if she has a metal if she?

Does an Atom of different elements have different number of protons

Which of Newton's Laws involves mass and acceleration? Question 1 options: 3rd 1st 2nd All of them

Faster vibrations cause waves with higher frequencies. True or False

An operating television set draws 0.71 ampere of current when connected to a 120-volt outlet. Calculate the time it takes the television to consume 3.0 x 10^5 joules of electronic energy.

What is the most important personality trait the coach should demonstrate to achieve a goal

Temperature is usually measured in degrees with a (n)

Two lab carts are pushed together with a spring mechanism compressed between them. Upon release, the 5.0 kg cart repels one way with a velocity of 0.12 m/s. The 2.0 kg cart goes the other way. At what velocity does it travel?

A bowling ball has a mass of 7.2 kg and a weight of 70.6 N. It moves down the bowling alley at 1 m/s and strikes a pin with a force of 15.0 N. What is the force that the pin exerts on the bowling ball?

an electric clothes dryer has a resictance of 16 Ohms it drawes 15 A of current what is the voltage in volts of the wall outlet that it is pluged into

A lorry with a mass of 5000kg accelerates to overtake a caravan on the motorway. Its acceleration is 1.5m/s². What force must the engine be providing? You can ignore the effects of friction and air resistance