Ultimate Physics Study Guide - Questions & Answers

b) When the wave passes over the glass it refracts. State what will happen to eachof the following properties of the wave when it refracts: (3)Velocity - Wavelength - Frequency -
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the ability to do work or cause change is called
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engine oil reduces friction between the moving parts in in a car energy bya.) cooling the engineb.) making the parts sticky so that they move more slowly.c.) making the parts slipperyd.) two of the above
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The weight of a box is having a mass of 100 kg is ___n
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A coin rests on a record 0.15 m from its center. The record turns on a turntable that rotates at variable speed. The coefficient of static friction between the coin and the record is 0.30. Required:What is the maximum coin speed at which it does not slip?
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Why does the brightness of a bulb not change noticeably when you use longer copper wires to connect it to the battery?a. All the current is used up in the bulb, so the connecting wires don't matter. b. Very little energy is dissipated in the thick connecting wires. c. Electric field in the connecting wires is zero, so emf = E_bulb * L_bulb. d. Current in the connecting wires is smaller than current in the bulb. e. The electric field in connecting wires is very small, so emf almost = E_ bulb * L_bulb.
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A block initially at rest is allowed to slide down a frictionless ramp and attains a speed v at the bottom. To achieve a speed 2v at the bottom, how many times as high must a new ramp be?
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True or False this is a black hole 75 points + Brainliests
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Which has more inertia?A human or an elephant and explain why?
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Brady connected the lose wire to the battery and created an electromagnet as shown below. He picked up 45 thumb tacks with his electromagnet, though his goal was to pick up 50 thumb tacks. What could Brady do to increase the strength of his electromagnet and pick up more thumbtacks?
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Suppose that your favorite AM radio station broadcasts at a frequency of 1600 kHz. What is the wavelength in meters of the radiation from the station
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If plants do not get watered, they will start to wilt because their central vacuoles are empty. When they get water again, they will stand back up because their vacuoles have filled back up. What process allows their vacuoles to fill back up with water? *
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A 0.75 m3 rigid tank initially contains air whose density is 1.18 kg/m3. The tank is connected to a high-pressure supply link through a valve. The valve is opened, and air is allowed to enter the tank until the density in the tank rises to 4.95 kg/m3. Determine, in kg, the mass of air that has entered the tank..
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Goal: Use dimensional analysis to solve conversion problems. 1. Observe: In the question, you are asked to convert kilometers to centimeters. To do this, first you will convert kilometers to meters. Drag the 1000 meters/1 kilometer tile down. A. What do you notice? __________________________________________________ B. Because kilometers appear in the numerator of one term and in the denominator of another, they cancel, or disappear. The process of converting units by canceling is called dimensional analysis. How many meters are in 0.828 kilometers? ________________________________ C. A meter is a much shorter unit of measurement than a kilometer. Based on this fact, does your answer to B make sense? ______________________________________
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Donald Duck Matthews wanted to show up all his friends with his newfound dancing skills he left his house to go to dressers house 20 m north from where he was he's so dresser his moves went off to the next place and next stop was 10 m west at choirboys house luckily he saw Eddie there too. After showing off his skills agai he was satisfied, but he still had to show one last person up. His brother who was 15 m South. After making it there he showed hos moves and smiled. what was Ducks displacement? A. 12 m SW B. 11 m NW C. 45 m NW D. 45 m NE
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What is the net work, in joules, required to stop a crate of mass 64.5 kg that is moving at a speed of 1.26 m/s
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What is the final velocity (in m/s) of a hoop that rolls without slipping down a 3.50-m-high hill, starting from rest
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Consider the four scenarios involving visible light. In scenario A, visible light has a wavelength of 715.3 nm. Determine its frequency, energy per photon, and color.
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The magnetic field at the center of a 0.60-cm-diameter loop is 2.7 mT . What is the current in the loop
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Calculate the force a 75 kg high jumper must exert in order to produce an acceleration that is 3.2 times the acceleration due to gravity.
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At a distance of 10.0 m from a loudspeaker, the sound intensity level is measured to be 70 dB. At what distance from the source will the intensity be 40 dB?
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Consider the trajectories of a projectile that experiences drag due to air resistance. Maximum range is achieved by launching the projectile at ________.a. An angle less than 45 degrees. b. An angles of 45 degrees. c. An angle greater than 45 degrees. d. An angle that depends on the launch speed
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What is the formula for impulse and momentum?
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The modern periodic table is organized by:atomic numberatomic masschemical namechemical symbol
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