Ultimate Physics Study Guide - Questions & Answers

A circuit consists of a wire, two lightbulbs, a switch, and a battery. Whatwould happen if one of the lightbulbs were replaced with a section of wire?A. The circuit would have more resistance.B. The circuit would have less resistance.C. The circuit would have less voltage,D. The circuit would have more voltage.
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A wooden block is sitting on an inclined plane near the bottom. The student gave the block a flick and it moved up the inclined plane then stopped. It is expected that the block to start sliding back down the inclined plane but it did not. It just sat there near the top. What is your explanation why the block stopped and did not begin sliding again?
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A motorcycle speeds up from 10 m/s to 25 m/s in 5 seconds. What is themotorcycle's acceleration?O A. 15 m/s2O B. -5 m/s2O C. 3 m/s2O D. 5 m/s2
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Objects that are more massive accelerate faster on the moon than those thatare less massiveO A. TrueO B. False
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A hot piece of brass (c = 380 J/kgC) is placed in water (c = 4180 J/kgC) to cool. The final temperature of the mixture will be closer to the initial temperature of which substance? Explain.
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Most of the thermal radiation supplied by the sun is absorbed by which of the following? A. clouds, B. the solar system, C. the earth's surface, D. the atmosphere
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Distinguish between the two main types of mechanical waves
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A ball falls for 4.6 seconds. From what height was it released?
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What evidence did Alfred Wegener use to support his theory of continental drift?A. coastline fits between different continents, similar rocks and fossils on different continentsB. Wegener had no evidence, which is why his theory was rejected.C. coastline fits between different continents only
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A frog jumps up at time t = 0.Which of the following graphs best shows the velocity uof the frog from when it jumps until it reaches its highestpoint?Assume upward is the positive direction.
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A simple motor converts ________energy into________energy.A) magnetic;electrical B) electrical:magneticC) electrical:mechanicalD) mechanical;electrical:
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1.) A potato is shot off a 20 meter high rooftop. The potato leaves the cannon traveling 50m/s horizontally. How far did the potato fly?
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A sphere with a charge q is fixed at the bottom left corner of the right triangle shown in the figure. Points P and R are at the location shown. A test charge is place at point P, and the charge-sphere system has potential energy U0. If the test charge is then moved to point R, what will the potential energy of the charge-sphere system be?
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In 3 seconds a car moving in a straight line increases its speed from 22.4 m/s to 29.1 m/s while a truck increases its speed from 0 mph to 6.7m/s in the same amount of time. What is the acceleration of the truck in m/s? *SHOW ALL WORK
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how does the study of social sciences affect our society?
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Help pls its urgent giving brainiest!!
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A Painting is on the wall using 2 strings, hanging perpendicular to the floor. 5 The strings have a tension force of 490N each, what is the mass of the hanged painting?
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three importance of measurement
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8.) If a car moving at 50km/h skids 15m with locked brakes, how far does the same car moving at 100km/hskid with locked brakes?a. 15mb. 30md. 120mc. 60m9.) A lever is used to lift a heavy load. When a 50N force pushes one end of the lever down 1.2m, the loadrises 0.12m. What is the approximate mass (not weight) of the load?a. 50kgc. 100kgd. 500kgb. 5kg10.) A block and tackle is used to lift a tractor that weights 210,000N a distance of 10m above the ground. Themaximum force you are able to supply is about 700N. Assuming that you must use every bit of your maximumforce in lifting the tractor (i.e. the tractor begins to rise when you pull with 700N), what length of rope will youhave to pull?
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A car is traveling at 70 mi/hr. The car travels for half an hour, how far has the car gone? Don't forget to include units of measurement.
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Which statement accurately describes current electricity?A. It is caused by the buildup of positively charged particles.B. It is caused by separated positively or negatively chargedparticles.C. It is caused by flowing negatively charged particles.D. It is caused by stationary positively and negatively chargedparticles.
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Which statement is NOT evidence of the plate tectonic theory?PLS SOMEONE HELP QUICK
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A 5 kg ball moving to the right at a speed of 6 m/s strikes another 4 kg ball moving to the left at 5 m/s. What is the velocity of each ball after the collision? PLZZZZ ANSWERRRR IM LITERALLY IN MISERY
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There are about 11,200,000 billion metric tons of in the atmosphere. Based on an estimated photosynthesis rate of 600 billion metric tons per year, how many years might it have taken to reach current levels? (Note: Assume for this exercise that the rate of production is constant even though it has changed over time.)Science and Engineering Practices
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