A ball rolls down a ramp. A small amount of friction heats up the ball. What energy transformations are taking place?

A race car accelerates on a straight road from rest to speed of 180 km/hr in 25s. Assuming uniform acceleration of the car through out find the find the distance covered in this time.

The acceleration of the universe's expansion is attributed by many cosmologists to the presence of which of the following? A. Dark matter B. Black Holes C. Dark energy D. Gravitaional pulls from unseen galaxies** i think its D but not sure

How do you determine the direction of current via multimeter?

Which of these examples shows a correlation? A) Lack of sleep causes people to struggle focusing. B) Grass makes people sneeze. C) People like dogs more than they like cats.

A NATO base in northern Norway is warmed with a heat pump that uses 7.0 °C ocean water as the cold reservoir. Heat extracted from the ocean water warms fluid to 80°C; this warmed fluid is used to heat the building.

Describe the factors that form deep currents

A comet is cruising through the solar system at a speed of 50000 kilometers per hour for 4 hours time. What is the total distance traveled by the comet during this time in kilometers, miles, and light years?

A gas in a closed container is heated with 12J of energy, causing the lid of the container to rise 3m with 5N of force. What is the total change in energy?

What are illuminated objects?

During one year a population of blue jays has zero population growth. which must be true about the blue jay population at the end of the year compared to the beginning of the year?