What would be a good reason to increase friction between surfaces?

When a car is at rest, its horn emits a frequency of 600 Hz. A person standing in the middle of the street hears the horn with a frequency of 580 Hz. Should the person jump out of the way?

Which region of the Sun is typically about 6,000 C?

The nebular hypothesis of the formation of the solar system assumes that the material that became the solar system began as a large spherical cloud of gas and dust, rotating slowly.

If it takes 520 joules of work to move an object 10 meters, what force was needed? A. 51 N B. 510 N C. 530 N D. 52 N

If an individual eats foods that do not contain any dairy and only drinks soy milk he or she most likely had a problems digesting

In an energy pyramid, the total energy available for consumption from one trophic level to the next one it is A. reduced B. Conserved C. multiplied D. Evenly distributed

Astronauts in orbit are not truly weightless.

Which of the following statements is true regarding the nature of light? Straight line motion is a particle property of light. Straight line motion is a wave property of light. Straight line motion is not a property of light.

A particle that is composed of two up quarks and one down quark is a (1) meson (3) proton (2) neutron (4) positron

Car headlights have both low beams and high beams. The high beams may be necessary when it is very dark outside. If the power for the high beam is 60.0 watts and the current is 5.0 amps, how much voltage is required?