Acar initially moving at a speed of 5.0m/s accelerates at a rate of 3.0m/s for 8.0 seconds. What final speed does the car reach? 35.0m/s 29.0m/s 25.0m/s 31.0m/s Clear my selection

Which of these planets is known to be without an atmosphere? Mercury Earth Venus Mars

The change in internal energy is always equal to the heat exchanged at constant pressure. False True

Q13.24: 11300 mAhas boon solected for a particular exposure, what exposure time would be required to produco 60 mAs? A 1/60second B 1/30second C 1/10second D 1/5second

Configure a CCD with a depth of 7 and take a 10 s exposure. What is the total number of counts due to the star? 31 343 127 30

A ski jumper has 1.2'10^4J of potential energy at the top of the ski jump. The friction on the jump slope is small, but not negligible. What can you conclude about the ski jumper's kinetic energy at the bottom of the jump? a. The kinetic energy will be greater than 1.2times 10^4J b. The kinetic energy will be less than 1.2times 10^4J c. The kinetic energy will be equal to the potential energy. d. Not enough information is given to determine what the kinetic energy will be. Please select the best answer from the choices provided A B c ) D

The development of a new experimental method is most likely to change a theory if it makes it possible to analyze samples when they are frozen. perform the experiment in a different lab. obtain and analyze results more quickly. study a larger sample size than before.

4x Conduction is the process in which A there is no medium required for heat transfer. B cold air displaces warmer air and causes air circulation. C the collisions of molecules within a substance transfer heat energy. D air flows from one location in the atmosphere to another helping to transfer heat energy.

When reboarding a personal watercraft (PWC) after a fall, how should it be rolled? A. in a clockwise direction B. in a counter -clockwise direction C. as shown on the label D. upright away from the waves

Which process combines lighter elements into heavier elements and produces energy within the Sun and other stars? A) fusion B) insolation C) conduction D) radioactive decay

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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