If a piece of glass permits light to pass through, then it is considered __ a. transparent c. transmitting b. reflective d. absorbent

To calculate the ideal mechanical advantage of a wheel and axle, divide the square of the wheel (in meters) by the square of the axle (in meters) .

33. The relationship between noise and distance from the source follows the inverse square law. This means that doubling the distance: A. Increases the sound pressure level by 1/4 B. Reduces the sound pressure level by 1/4 C. Reduces the sounds pressure level by two times D. Reduces the sound pressure level by 1/2

Compare and contrast gravitational potentia l energy and elastic potential energy. they have in common?What is different about them? __

What happens when a bowl of ice cream is left uneaten on a counter in a warm room? (1 point) Thermal energy is transferred from the air to the ice cream, warming the ice cream. Thermal energy is transferred from the ice cream to the air, cooling the air Heat is transferred from the air to the ice cream. Potential energy is transferred from the air to the ice cream

Cooking pasta in boiling water is an example of A. convection B. conduction C. radiation D. albedo

Why does the Moon look different every night?

How does mixing colors of light differ from mixing colors of paint? Light mixing creates darker colors Paint mixing results in bright colors Light mixing results in white light Paint mixing creates lighter colors

Light travels 9.45cdot 10^15 meters in a year.There are about 3.15cdot 10^7 seconds in a year How far does light travel per second? Write your answer in scientific notation. square meters

The 3 K cosmic microwave background is the evidence of existance of dark energy. accelerating expansion of the universe. big bang.

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Newton's laws of motior fail: when dealing with extremely low masses. for objects with extremely large masses. when using atomic clocks rather than stopwatches. at speeds significantly less than the speed of light. in helping us understand most of the everyday world.

A radioactive substance decays exponentially. A scientist begins with 140 milligrams of a radioactive substance. After 24 hours 70 mg of the substance remains. How many milligrams will remain after 27 hours? $\square $ mg Give your answer accurate to at least one decimal place Question Help: Video

The branch of biomechanics that deals with the aspects of moving systems is known as dynamics. kinetics. mobility. kinematics.

When a forklift is loaded, where is its center of gravity? A. Under the operator B. At the center of the forklift C. Varies based on the combined centers of gravity of the forklift and the load D. At the center of the forks

Which of these statements is most likely correct about a weak nuclear force? (2 points) It binds electrons and protons. It is a repulsive force. It is an attractive force. It binds protons and neutrons.

Which side of the electromagnetic spectrum has shorter waveiengths? $\square $ Which side of the electromagnetic spectrum has higher energy? $\square $ Which side of the electromagnetic spectrum has higher frequencies? $\square $ blue

Living and Nonliving substances obey all of the answers the 1st law of thermodynamics. the 2nd law of thermodynamics. the law of gravity.

Physics is explicitly involved in studying which of these activities? A. the mixing of metals to form an alloy B. the metabolic functions of a living organism C. the motion of a spacecraft under gravitational influence D. the depletion of the atmospheric ozone layer due to pollutants E. the killing of cancerous cells by radiation therapy

Outdoors, shadows are longest at what time of day? Midnight Sunrise and sunset Noon 10 a.m.

Whose laws of motion became the basic building blocks for our understanding of the functioning of the universe? Johannes Gutenberg Martin Luther Isaac Newton Francis Bacon Rewatch