You ride your bike for a distance of 30 km. you travel at a speed of 0.75 km/minute. how many minutes does it take?

A bowling ball sits at rest. Another ball rolls down a lane at constant speed. Which, if either, is in equilibrium? Defend your answer.

Explain the energy, temperature, and mass changes that occur when A - an ice at 0°c, starts to melt (3 marks) B - a saucepan filled with soup at 15°c is heated on a gas hob (3 marks) C - boiling water from a kettle at 100°c turns to water vapour

Mixtures can occur between all phases of matter. Give an example for each of the following mixtures: 1. Gas/gas 2. Gas/liquid 3. Liquid/liquid 4. Solid/liquid 5. Solid/solid

When a smooth flowing stream of water comes out of a faucet it narrows as it falls. Explain why this happens.

Lightning bolts can carry currents up to approximately 20 ka. we can model such a current as the equivalent of a very long, straight wire. part a if you were unfortunate enough to be 5.

What is the fundamental frequency if the tension in the string is halved?

What amount of heat is required to raise the temperature of 25 grams of copper to cause a 15º C change? The specific heat of copper is 0.39 J/gº C. 115 J 150 J 250 J 300 J

Plasma is the most abundant state of matter in the universe

What environmental effects are shared by all fossil fuels

Joseph runs 40 yards In 2.5 seconds. What Is Joseph's speed?