A crate is dragged 4.0 m along a rough floor with a constant velocity by a worker applying a force of 400 N to a rope at an angle of 30∘ to the horizontal.

A ray of yellow sodium light enters water from air with an angle of incidence of 45°. What is the angle of refraction?

Find the equivalent capacitance of a 4.20 uf capacitor and an 8.50 uf in parallel and in series

Genetics is the most important factor that affects your physical fitness.

If the moon rotated on it's axis same speed as earth would we see different sides of the moon

One group of students is investigating the properties of charged objects. Their observations are listed below. When two positively charged objects are brought close to each other, they push each other away.

When a light shines through an object it is called

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.

Identify several factors in the environment that can affect physical fitness levels.

Do Brain cells act and look like skin cells? Why or why not?

A taxi hurries for 1 3/4 hours with a constant speed of 84 mph and then for another 1 hour 45 minutes with a constant speed of 24 mph. what is its average speed for the total trip?