Simple machines A. cannot be combined to make compound machines. B. are tools that make work easier. C. reduce the amount of energy needed to do work. D. are made up of multiple moving parts.

Talia is on a road trip with some friends. in the first 2 hours, they travel 100 miles. then they hit traffic and go only 30 miles in the next hour. the last hour of their trip, they drive 75 miles.

A block initially at rest is allowed to slide down a frictionless ramp and attains a speed v at the bottom. to achieve a speed of 1.8v at the bottom, how many times as high must a new ramp be?

Mg emits radiation at 285 nm. Could a spectroscope be used to detect this emission?

1. How does changing the voltage in a circuit affect the current in the circuit? 2. What is the impact of adding more light bulbs in series? 3. In the series circuit, is the current constant throughout the circuit, or does it vary?

Bailee bad a gross income of 2358.33 during each pay period in 2009. if she got paid monthly, how much of her oay was defucted for fica in 2009?

Name of group to which hydrogen belongs to

Which would increase the reaction rate? Check all that apply. A. Raising the temperature B. Stirring the reaction C. Raising the activation energy D. Adding a catalyst

How much of the electrical energy transformed by a common light bulb becomes heat energy?

What is the current for a 1200W microwave connected to 110V outlet.

If a negatively charged particle enters a region of uniform magnetic field which is perpendicular to the particle's velocity, will the kinetic energy of the particle increase, decrease, or stay the same?