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A seat on a Ferris wheel moves at a constant tangential speed around the wheel. If the seat is 7 m from the center of the wheel and has a tangential speed of 0.5 m/s, what centripetal acceleration doe
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Every year the Earth travels about 109km as it orbits the Sun. What is Earth's average speed in km/h?
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For saving lives, what is the most important safely feature on a car a. air bag b. safely belt c. anti-lock brakes
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This diagram shows a skier moving down a hill. Which statement best describes the skier? The skier has potential and kinetic energy.The skier has only potential energy. The skier has only kinetic ene
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Natural gas is very abundant in the United States. Compared to other fossil fuels, which describes the waste products of the combustion of natural gas? A) Natural gas has no waste products. B) Natural
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A train travels 94 kilometers in 5 hours, and then 84 kilometers in 3 hours. What is its average speed?
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Two children are pulling and pushing a 30.0 kg sled. The child pulling the sled is exerting a force of 12.0 N at a 45o angle. The child pushing the sled is exerting a horizontal a force of 8.00 N. The
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Explain the effect of using controlled rectifiers in AC circuitsUsing waveform diagrams, explain the output characteristic of a controlled rectifier
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The electric fan shown has the following specifications: The entire unit weighs W = 15 lb with the center of gravity shown. The fan produces a maximum thrust of T = 6 lb. The height h can be adjusted
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A 480 kilogram airboat at rest applies a force of 800 Newtons for 12 seconds what is the final velocity of the Airboat
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Based on the definition of specific heat and the information provide below, if the same amount of heat is added to 1 kg of all these substances, which substance will raise in temperature to the highes
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Lead has a density of 11.3 g/cm^3. If you have 1.0 kg of lead, what is the volume in cubic centimeters (cm^3?)
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A circular test track for cars has a circumference of 3.5 km . A car travels around the track from the southernmost point to the northernmost point. what distance does the car travel?
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Maslow's hierarchy of needs assumes individuals are generally misinformed and need guidance from therapists individuals are generally good and committed to improving themselves individuals are general
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A teacher pushed a 10kg desk across a floor for a distance of 5m. she exerted a horizontal force of 20n. how much work was done?
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. When a police officer uses radar for speed control, the officer is using what kind of electromagnetic waves? X-rays gamma rays radio waves ultraviolet rays
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If the same force is applied to each of the balls shown below,which one will move the slowest? A. m=7.3kg B. m=1.0 C. m=0.75kg D. M=0.5kg
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A ball is dropped from a place above the girl in the figure. She is watching the path of the ball.Why does the ball continue moving in the same direction A. A balanced force is acting on the ball B. G
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Our Sun is one of many stars in the Milky Way Galaxy. Which term BEST describes our Sun? A) red giant B) protostar C) white dwarf D) medium sized star
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A tank with a flat bottom is filled with water to a height of 4 meters. What is the pressure at any point at the bottom of the tank? (You can ignore atmospheric pressure when calculating your answer.)
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Displacement vectors of 4 km south, 2 km north, 5 km south, and 5 km north combine to a total displacement of..?
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Which part of a refrigerator determines whether it is an open or close system? how can you change the system from close to open
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What is electricity? A) the orbit of electrons around a nucleus B) the flow of positive electric charge C) the flow of negative electric charge D) the flow of electric charge
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It's nighttime, and you've dropped your goggles into a 3.0 m swimming pool. If you hold a laser pointer 1.0 m above the edge of the pool, you can illuminate the goggles if the laser beam enters the wa
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What is the correct sequence of materials, in order of increasing light-transmitting capabilities (from least to most)?
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As Aubrey watches this merry-go-round for a total of 2 minutes, she notices the black horse pass by 15 times. What is the period of the black horse?
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A policeman starts giving chase 60 seconds after a stolen carzooms by at 108 km>hr. At what minimum speed should hedrive if he has to catch up with the driver before he managesto get onto an expresswa
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Complete the sentence to describe what a wave is and what it does. A wave is a ___ that carries ___ from one place to another.
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Part iv: more than meets the eye (transformer) in a transformer, moving electrons in one coil create a magnetic field. when the created magnetic field interacts with a second coil, electrons can be fo
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Is there a relationship between the magnitude of the bond dipole and how the molecule is affected by the electric field?
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When we talk about the speed of light, we typically think of visible light. though physicists have performed experiments that demonstrate?
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) two stereo speakers mounted 4.52 m apart on a wall emit identical in-phase sound waves. you are standing at the opposite wall of the room at a point directly between the two speakers. you walk 2.11
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An unstretched spring is 19.0 cm long. when you hang an 835 g weight from it, it stretches to a length of 22.0 cm .
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Explain how drinking through a straw illustrates fluid flowing from high-pressure to low-pressure areas.
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If a football player positioned on the scrimmage line runs straight downfield for 26 yards and then cuts to his left for 6.0 yards to receive a pass, what is the football player's total displacement f
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What is the displacement of a spring if it has a spring constant of 10 N/m, and a force of 2.5N is applied
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Which element is a halogen and has a larger average atomic mass than arsenic (As)? A. selenium (Se) B. iodine (I) C. strontium (Sr) D. chlorine (Cl)
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The graph shows all of the stable isotopes of elements according to the numbers of protons and neutrons in their nuclei. (the graph is in the attachment) Which statements are supported by the graph? C
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Two people timed an object with a stop watch. They each got a slightly different result. How could this be?
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Which elements can form acidic compounds? Check all that apply. sulfur rubidium arsenic selenium silicon xenon antimony
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In late adulthood, changes in memory may bot be inevitable however, any decline in memory tends to invite
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In an attempt to reduce our dependence on nonrenewable resources and cut down on the harm to the environment, we could burn ____to produce electricity
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How is power defined? a. the rate at which is accomplished b. the direction of a force applied to an object c. the total distance an object is moved d. the quantity of work accomplished
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Which statements describe the relationship of Earth and its moon? Check all that apply. The moon orbits Earth following a nearly circular path. The gravitational pull of Earth on the moon is parallel
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The drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. surface 1 has an area of 1.4 m2, while surface 2 has an area of 4.6 m2. the electric field e in
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On an ice skating rink, a girl of mass 50 kg stands stationary, face to face with a boy of mass 80 kg. The children push off of one another, and the boy moves away with a velocity of +3 m/s. What is t
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As more and more energy is added to the atoms of a solid plastic, what will the plastic change into first
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Compare and contrast these forces. You must provide two ways that they are alike and two ways that they are different. You may make a list, write in paragraph form, or make a chart.
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Two deer run toward each other one deer has a mass of 20 kg and runs west with a speed of 5m/s. while the other has a mass of 30 kg and runs east with a speed of 4 m/s. what is the total momentum of t
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A window washer stands on a scaffolding 30m above the ground. If he did 23,520J of work to reach the scaffolding, what is his mass?
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