Physics Questions

The forklift exerts a 300.0 N force on the box and moves it 15.0 m into the air. How much work does the forklift do? A. 500 J B. 1.50 * 10^3 J C. 4.50 * 10^3 J D. 0.00 J
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A motorboat travels directly east. During its trip, winds blow from directly north, directly south, and southwest. Which of the following statements is true? A. All of the winds do work on the boat. B. Only the north wind does work on the boat. C. Only the south wind does work on the boat. D. Only the southwest wind does work on the boat.
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What is the period of a sound wave having afrequency of 340. hertz?(1) 3.40 × 10^2 s (3) 9.73 × 10^−1 s(2) 1.02 × 10^0 s (4) 2.94 × 10^−3 s
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When air is blown across the top of an openwater bottle, air molecules in the bottle vibrateat a particular frequency and sound is produced.This phenomenon is called(1) diffraction (3) resonance(2) refraction (4) the Doppler effect
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Which statement describes a characteristiccommon to all electromagnetic waves andmechanical waves?(1) Both types of waves travel at the same speed.(2) Both types of waves require a material mediumfor propagation.(3) Both types of waves propagate in a vacuum.(4) Both types of waves transfer energy.
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The wavelength of a wave doubles as it travelsfrom medium A into medium B. Compared to thewave in medium A, the wave in medium B has(1) half the speed(2) twice the speed(3) half the frequency(4) twice the frequency
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MATCH THESE ^-^Match Newton's law with the correct statement.1. law of universal gravitation 2. 1st law of motion (law of inertia)3. 2nd law of motion 4. 3rd law of motion -------------------------------------------------------------------------------------------------------A. "My coffee spilled all over because you slammed on your brakes!" B."The box of cotton is much easier to lift than the box of books." C. "That bat hurt my hands when I hit the ball!" D. "I can't hit the ball farther than you because you're stronger than I am."
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How much work is required to move3.0 coulombs of electric charge a distance of0.010 meter through a potential difference of9.0 volts?(1) 2.7 × 10^3 J (3) 3.0 J(2) 27 J (4) 3.0 × 10^−2 J
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Astronauts traveling toward Earth in a fastmovingspacecraft receive a radio signal from anantenna on Earth. Compared to the frequencyand wavelength of the radio signal emitted fromthe antenna, the radio signal received by theastronauts has a(1) lower frequency and a shorter wavelength(2) lower frequency and a longer wavelength(3) higher frequency and a shorter wavelength(4) higher frequency and a longer wavelength
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Compare the charges and masses of protons, neutrons and electrons.
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Which of the following represents a chemical change to matter? A. digestion of food B. melting an ice cube C. shredding paper D. crushing an ice cube
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The effects of agriculture and industry can be more harmful with the further loss of wetlands.
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Which best describes the motion of air particles when a sound wave passes through them? A. The particles move together and apart perpendicular to the direction of the wave. B. Air particles move parallel to the sound waves C. The particles move perpendicular to the direction of the wave. D. The particles move both perpendicular and parallel to the direction of the wave.
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A speeding car collides with an unlucky bug flying across the road Which explains why the impact doesn't equally damage the car and the bug A. The car has more momentumB.the bug is traveling fasterC. The bug has more momentumD. The net force is zero
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The loss of an organism at the bottom of a food chain negatively impacts all organisms in the chain.
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What is true about the inertia of two cars, Car A of mass 1,500 kilograms and Car B of mass 2,000 kilograms
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A ball of a mass 0.3 kg is released from rest at a height of 8 m. How fast is it going when it hits the ground? Acceleration due to gravity is g=9.8 m/s^2
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What usually happens to the host’s DNA during the lytic cycle?
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