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Someone uses a system of pulleys to lift a heavy load. The person pulls 5 meters of rope and the load only raises 1 meter. How does the energy required to lift the load with pulleys compare to the ene
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A 4.5-v battery is connected to a bulb whose resistance is 1.6 ω . part a how many electrons leave the battery per minute?
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As the captain of the scientific team sent to planet physics, one of your tasks is to measure g. you have a long, thin wire labeled 1.04 g/m and a 1.27 kg weight. you have your accurate space cadet ch
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A rock dropped into a pond produces a wave that takes 14.4 s to reach the opposite shore, 37.2 m away. the distance between consecutive crests of the wave is 3.8 m. what is the frequency of the wave?
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A person is standing outside on a windy day and throws a 0.5 kg ball up at an angle θ and speed υ0 = 10 m/s. the wind produces a force on the ball equal to −2i n. what should θ be so t
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At 3:15 one afternoon, the temperature over the land reaches its highest value for the day — about 89°F. The temperature over the adjacent water is about 72°F. What would the expected weather cond
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A 2 cm object is 10 cm from a convex lens that has a focal length of 4.4 cm. The image is 8 cm from the lens. The height of the image, to the tenths place, is _____
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Suppose you read the following description in the want ads for a used car: mint condition, 55,000 miles on the odometer, model XJ4500, willing to accept reasonable offer. Describe the usefulness of ea
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A farm tractor tows a 3300-kg trailer up a 14° incline with a steady speed of 2.8 m/s. What force does the tractor exert on the trailer? (Ignore friction.)
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A large jet flying overhead is low enough so that a man on the ground can hear its engines. The man sees the jet before he hears the engines because
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A cylindrical container with a cross-sectional area of 61.2 cm2 holds a fluid of density 856 kg/m3. At the bottom of the container the pressure is 123 kPa. Assume Pat = 101 kPa
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If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? Check all that apply.
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5.3 × 1012 kg satellite is 1,800 m from another satellite that has a mass of 3.5 × 108 kg. What is the gravitational force between the satellites? 3.82 × 104 N 6.87 × 107 N 5.72 × 1014 N 1.03 ×
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The pressure on a point in a liquid is directly proportional to the distance from the surface to the point. in a certain liquid, the pressure at a depth of 4 m is 60 kg per m^2. find rhe pressure at a
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In the simple AC circuit shown, R = 70.0 ohms and v = Vmax sin(wt)a) if Vr = 0.250Vmax for the frst time at t = 0.0100 s, what is the angular frequency of the source?b) what is the driving frequency o
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A Geiger counter is like an electroscope that discharges whenever ions formed by a radioactive particle produce a conducting path. A typical Geiger counter consists of a thin conducting wire of radius
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Blocks of 1.0, 2.0, and 3.0 kg are lined up on a frictionless table, as shown in (Figure 1), with a 12-N force applied to the leftmost block.:?What’s the magnitude of the force that the rightmost bl
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A person looks at a gem using a converging lens with a focal length of 11.9 cm. The lens forms a virtual image 25.3 cm from the lens. Determine the magnification.
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A spaceship orbiting earth flies to the moon. How is the gravitational force pulling on the spaceship related to the distance that the spaceship is from the earth? Question 25 options: The gravitation
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Noe is studying Wave A and Wave B. Wave A is rated at 100 dB, and Wave B is rated at 90 dB. Which statement can be made about the waves? Wave A has fewer decibels than Wave B. Wave A is louder than Wa
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A point charge of 4.0 u c is placed at a distance of 0.10 m from a hard rubber rod of an electric field of 1.0 × 10^3 n/c what is the electric potential energy of the point charge
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A measure of the amount of light received on Earth is a star's ____. a. apparent magnitude c. position in space b. absolute magnitude d. size
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If an object that enters the Earth’s atmosphere does not completely disintegrate, its remains can impact the Earth true or flase
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A spaceship of mass 2.10×10^6 kg is cruising at a speed of 6.00×10^6 m/s when the antimatter reactor fails, blowing the ship intothree pieces. One section, having a mass of 4.80×10^5 kg, is blown s
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Cereal plants gain chemical potential energy as they grow. Which form of energy is converted to create the chemical potential energy?
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Which best describes the physical and chemical digestion of food? Physical and chemical digestion occur in the mouth; only chemical digestion occurs in the small intestine. Physical and chemicall dige
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2. You do work on something when you lift if against gravity. Explain how work relates to gravitational potential energy using at least two complete content related sentences. If the lifted object is
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Sound waves are mechanical waves in which the particles in the medium vibrate in a direction parallel to the direction of energy transport. Identify another name for this type of wave motion/10763632/
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Which statement is true? (2 points) Geothermal power plants use the renewable resource of heat from within the Earth to generate electricity. Hydroelectric energy uses the energy from the sun, which
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An ice skater starts with a belocity of 2.25 m/s in a 50 degree dorection. After 8.33 s, she is moving 4.65 m/s in a 120 degree direction. What is the x component of her acceleration?
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An igneous rock interacts with the different layers of Earth and is subjected to heat and pressure over a long period of time. However, it does not melt. What is most likely formed as a result of thes
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A smooth hemispherical bowl of radius r is fixed with its rim uppermost and horizontal. A smooth uniform rod of length 2l (l>r) rest with one end inside the bowl and leaning on the rim. Find the lengt
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What does a velocity vs time graph look like for constant velocity if the speed is 2m/s. And the time is not given.
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You apply 100.0 N of force to a machine. The machine applies 20.0 N of force to the load. What is the mechanical advantage of the machine?
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Andy has two strong magnetic marbles of equal size. What will happen when he puts the two marbles about 2 centimeters apart?
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Venn diagrams are used for comparing and contrasting different topics. The overlapping sections show characteristics that the topics have in common, and the sections that are unique to each topic show
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Explain why organisms are more likely to be well preserved in mud than in sand? Justify your response in two or more complete sentences.
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A paper-filled capacitor is charged to a potential difference of 2.8 V and then disconnected from the charging circuit. The dielectric constant of the paper is 3.7. Keeping the plates insulated, the p
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The list shows the results of six athletes competing in the long jump, which has a target distance of 20 feet. 12 feet, 11 feet, 13 feet, 10 feet, 20 feet, 12 feet
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According to Binet, mental age relates to chronological age because ___________. A. they are the same thing B. mental age involves calculating the chronological age at which a person functions C. chro
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In Robin’s linguistics class, the teacher and students are discussing how the word “nice” once meant “foolish” and how “awful” used to mean “full of awe.” They are most likely discus
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If you mix equal amounts of cyan pigments and magenta pigments on a sheet of white paper, what color will you see on the paper? A. Red B. Blue C. Black D. Yellow E. Cyan F. Magenta
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Lab Report Please read carefully and do your best. Thank you.
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Scientist and engineers may recommend carpets and draperies for the walls of concert hall to reduce excess A. Echolocation B.reverberation C.frequency D amplitudes
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A car is moving east along a straight, level road at a constant velocity. Which forces form an action/reaction force pair?
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A pitcher throws a 0.5 kg ball of clay at 6 kg block of wood. the clay sticks to the wood on impact, and their joint velocity afterward is 3 m/s. what was the original speed of clay?
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If an object is thrown in an upward direction from the top of a building 1.6 x 102 ft. high at an initial velocity of 21.82 mi/h, what is its final velocity when it hits the ground?
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50 PTS!!! Consider the psychological theories that you have learned about so far. Select and write about one theory that you personally believe is the most effective or significant. Explain why you th
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Can someone please help me thank you so much. A 200-kg boulder has 39,200 joules of gravitational potential energy. What height is it at?
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Isabel’s first car had a manual stick shift. After many years of driving an automatic car, she needs to use her sister’s car, which also has a stick shift. Isabel takes a few minutes to get used t
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