Why is energy needed to break chemical bonds

The sun continuously radiates energy into space, some of which is intercepted by the earth. The average temperature of the surface of the earth remains about 300K.

Consider two bicycle riders, A and B. The two riders have equal masses Mrider A = Mrider B and their respective bicycles also have similar frames, Mframe A = Mframe B.

Volume, mass, and weight can be measured with balances, scales, and?

7. A truck traveling west on the highway experiences an acceleration to the east. What could be the cause of this acceleration?

A rocket is launched from atop a 101 foot cliff with an initial velocity of 116 ft/s. /a. Substitute the values into the vertical motion formula h (t) = - 16t2 + vt + h0. Let h (t) = 0 b.

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?