What information is required when calculating speed or acceleration?

Rays traveling parallel to the principle axis of a concave mirror will reflect out through the mirrors focus? a. true b. false

What causes the change from day to night?

An 18.0 kg box is released on a 34.0° incline and accelerates down the incline at 0.270 m/s2. find the friction force impeding its motion. how large is the coefficient of friction?

What force drives winds and ocean currents?

A submarine travels 25 km/h north for 3.2 hours. What is its displacement? A. 7.8 km north B. 28.2 km north C. 80.0 km north D. 253 km north

Which type of reaction will for a chemical bonded combination

What kind of change is salt dissolving in water

Which of these is the most effective way for manny to cool down after kickboxing? start static stretches to increase his flexibility walk around to lower his heart rate sit and catch his breath to avoid light-headedness run one to three miles to

One of the driving forces of plate motion is: A. volcanic eruptions along coastlines B. meteor impacts in the ocean basins C. convection currents in the mantle D. hot liquid magma in the inner core

Which element is required for the combustion of fossil fuels? nitrogen hydrogen oxygen carbon