Are the light waves reflecting off a red stop sign longer or shorter than the waves reflecting off a Violet colored jacket

In the physics lab, a cart with a mass of 1 kg is found to have an acceleration of 50 cm/s^2 when it is pulled by a string with clay hanging off the ramp. If the mass of the cart is doubled to 2 kg, what will the new acceleration of cart be?

A 3.00 kg particle has a velocity of (3.02 - 4.10 m/s.

A toy car on a string is pulled across a table horizontally. The string is at an angle of 30°. Which is the correct free-body diagram for this situation?

You swing a bat and hit a heavy box with a force of 1500 N. The force the box exerts on the bat is A. less than 1500 N if the box moves. B. greater than 1500 N if the box moves. C. greater than 1500 N if the bat bounces back. D.

Which activity can be termed as an economic activity?

What is the difference between a fault-block and upwarped mountains?

Which of the following is not one of the reasons to properly warm up before exercising? A. Develop overall flexibility. B. Increase blood flow to the muscles and raise body temperature. C. Prevent injuries such as strains sprains and muscle cramps.

you are not chilly when swimming in warm water. but when emerging from warm water on a warm summer day, you feel chilly if the wind is blowing. Explain

A Find the magnitude of the angular momentum of the second hand on a clock about an axis through the center of the clock face. The clock hand has a length of 15.0 cm and a mass of 6.00 g.

A geologist finds ripples preserved in ancient sedimentary rock that look just like ripples made by water in mud. He concludes that there was once water in that location that created the ripples. Why is this conclusion reasonable?