6. A lawn cutter is rolled across the lawn by a force of 115 N pushing along a handle angled 22.5^circ below the horizontal.Danielle develops 64.6 Watts of power pushing this lawn cutter for 90.0 seconds. What distance was the lawn cutter pushed?

Does doubling the sound intensity double the sound intensity level (decibel level)? Yes No Explain. square This answer has not been graded yet.

Why is fusion nuclear energy currently not widely used as a source of electricity? Fusion reactions have not yet been achieved. Fusion reactions cannot be controlled. Fusion reactions require very high temperatures and pressure. Fusion reaction energy cannot be converted into electricity.

19. Que pasaria con la fuerza gravitacional entre ta Tierra y la Luna gi la distancis entre ellas gumentara? (2 puntos) Disminuiria Seguiria iqual pamentaria Se duplicaria

The sun releases a huge amount of energy. About what fraction of this energy reaches Earth? one-billionth one-tenth one-half nine-tenths

At what temperature does the average speed of an oxygen molecule equal that of an airplane moving at 589 mph ? Express your answer using one decimal place. T=square ^circ C

What is a photon? A photon is a corpuscle of light that is always within the red light range of the visible spectrum. A photon is a corpuscle of light that throbs at a characteristic frequency of vibration. A photon is a corpuscle of light that is always within the violet light range of the visible spectrum. A photon is a corpuscle of light that travels in any transparent material at a speed of c.

A substance in its __ phase has slov v moving molecl lles and their attraction holds them together tightly. Gas Solid Plasma

While discussing mass and weight: Technician A says that mass is the measurement of an object's inertia. Technician B says that mass and weight may be measured in cubic inches. Who is correct? Technician A Technician B Both A and B Neither A nor B

Which of the following fires will an IR detector NOT be able to sense? Select one: a. Wood b. Alcohol c. Gasoline d. Paper

Hot Questions

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