Infrared rays have a shorter wavelength than

a. ultraviolet rays.

b. x-rays.

c. radar waves.

d. gamma rays.

How long does it take fossil fuels to form?

ions are atoms or groups of atoms that have a positive or negative charge. which of the following statements is true of ions?

During a space shuttle launch about 830,000 kg of fuel is burned in 8 min. the fuel provides the shuttle with a constant thrust, or forward force.

What is the difference between speed and velocity? A. velocity describes speed with direction. B. velocity describes direction with position. C. velocity is used in space; speed is used on earth D. there is no difference.

How does the law of conservation of energy apply to the transformation of various forms of energy? Explain with examples.

How do I calculate initial speed by using the slope of a graph? The graph shows the relationship between S { (sin2ϴ) / g} and the average range of a projectile in meters.

You push a 50 kg wooden box across a wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.15. Now you double the force on the box. How long would it take for the velocity of the crate to double to 2.0 m/s?

A star is in hydrostatic equilibrium when the outward push of pressure due to core burning is exactly in balance with the inward pull of gravity.

How are mass and weight different? a. Mass is the space an object takes up and weight is the effect of gravity on mass. b. Mass is the amount of matter and weight is the effect of gravity on mass. c.

What were the discoveries of astronomers like Copernicus and Galileo?