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A man goes from his house to office with a speed of 57km/hr and returns to the house with a speed of 83km/hr in his car. Calculate the average speed of the car.

What mediums are best for light waves?

A 1200 kg car surrounds an 80 meter radius curve. If the coefficient of friction between the tires and the road is 0.65, what maximum speed should the car have to not leave the curve to : a. 23 m / s b. 10 mph c. 62 km / h d. 6.3 m / s

If a 66.0-kg person stands with both feet on the same step, what is the gravitational potential energy of this person on the first step of the flight of stairs relative to the same person standing at the bottom of the stairs?

What are the equipment requirements for windshields and side windows

an object with a mass of 6.0 kg accelerates 4.0 m/s² when an unknown force is applied to it. what is the amount of force?

Which of the following is the SI unit for volume

All electromagnetic waves travel at the same speed in a vacuum true or false

When leaving a fish tank, a ray moving at 31.0 deg in glass (n = 1.50) exits into the air. At what angle does it enter the air?

Which of the phases that occur in matter is dew?