What do fire investigators begin their search with?

A dart is loaded into a spring-loaded toy dart gun by pushing the spring in by a distance d. For the next loading, the spring is compressed a distance 8d. How much work is required to load the second dart compared to that required to load the first?

Brief definition of gravity

Comets travel around the sun in elliptical orbits with large eccentricities. If a comet has speed 2.1*104 m/s when at a distance of 2.5*1011 m from the center of the sun, what is its speed when at a distance of 4.9*1010 m.

A lightbulb converts 10 percent of the electric energy it uses into radiant energy

4. A helicopter is flying at a height of 1.5km. If it has 50MJ of G. P. E., what is the mass of the helicopter?

A construction foreman exerts 1300 Newtons of force trying to move a 1200-kg block of concrete. How many Joules of work does he perform?

It takes 9 seconds for a 10 newton force to move an object 4 meters to the right. What are the direction and magnitude of this force? A. The direction is to the right. The magnitude is 9 seconds. B. The direction is 4 meters.

West of a city, a certain eastbound route is straight and makes a steep descent toward the city. The highway has a 14% grade, which means that its slope is - 14 100.

If animal DNA is injected into a human, what would happen?

Give one word which means the same as 'moving with a negative acceleration '