How can humans activities affect the frequency and impact of natural disasters

What is the final equilibrium temperature when 12 g of milk at 7◦C is added to 175 g of coffee at 69◦C? Assume the specific heats of milk and coffee are the same as that of water, and neglect the specific heat of the container. Answer in units of ◦C.

A certain wire has a length l and a resistance r. It is stretched uniformly to a length of 2l. The resistance of the wire after it has been stretched is

The atmosphere has become less polluted over time.

What sort of element can be found in Group 13 of the periodic table?

A car is at rest at the top of a driveway that has a slope of 12.5°. If the brake of the car is released with the car in neutral gear find: a. the acceleration of the car down the drive. b. the time it takes for the car to reach the street, 8.

Green light has a lower frequency than blue light. Which color of light has a longer wavelength?

Our 12 V car battery does not appear to be functioning correctly, so we measure the voltage with a volt meter and find that the voltage on the battery is only 9V.

A strong lightning bolt transfers about 27.88 C to Earth. How many electrons are transferred? The elemental charge is 1.602 * 10-19 C. The lightning bolt discharge lasts one millisecond.

What is the speed of a bobsled whose distance-time graph indicates that it traveled 121m in 26s? m/s

Which formula describes newton's second law of motion?