Ultimate Physics Study Guide - Questions & Answers

during ice operation when the coolant expands and pressure in the closed coolant system increases, what component allows excess pressure to vent to prevent system damage?
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if a river has an average width of 20 m, an average depth of 2 m, and is flowing with a velocity of 3 m/s, what is its discharge? give your answer in cubic meters/second.
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does the spacing between fringes in a two-slit interference pattern increase, decrease, or stay the same if (a) the slit separation is increased, (b) the color of the light is switched from red to blue, and (c) the whole apparatus is submerged in cooking sherry? (d) if the slits are illuminated with white light, then at any side maximum, does the blue component or the red component peak closer to the central maximum?
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you work at a garden store for the summer. you lift a bag of fertilizer with a force of 131 n, and it moves upward with an acceleration of 0.790 m/s2. (a) what is the mass (in kg) of the fertilizer bag?
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a hockey puck is hit on a frozen lake and starts moving with a speed of 13.20 m/s. exactly 5.6 s later, its speed is 6.60 m/s. what is the puck's average acceleration?
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a car cruising at 30 m/s (about 68 mph). if the kinetic friction coefficient between the tires and the road is 0.70 (when the road is dry), when the driver hits the brake, how far (approximately) will the car slide before it comes to a full stop? (g
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When are the dry bulbs and dew point temperatures identical?
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Determine the tangential and centripetal components of the net force exerted on the car (by the ground) in Example when its speed is 15 . The car's mass is
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In order to slow down, a driver applies a force of 3130 N to their car's brakes for a distance of 14 m. The initial energy of the car is 100,000 J, what is the car's final energy
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The greater the mass of an object, a.the more space it takes upb.the more balanced it isc.the easier the object starts movingd.the greater its inertia
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what will be the mass of a planet whose radius is 20% of the radius of earth.with explanation please dont just give straight answer
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what is the relathion shop between perriod and frequency
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a pen placed 25cm from a concave spherical mirror produces a real image 20cm from the mirror. what is the focal length of the mirror
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suppose a woman does 550 j of work and 9800 j of heat transfer occurs into the environment in the process. (a) what is the decrease in her internal energy (in kcal), assuming no change in temperature or consumption of food? (that is, there is no other energy transfer.) -10350 kcal (b) what is her efficiency (in percent)? %
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when an apple is resting on top of a table, how many force pairs (number of pairs not individual forces)act on the apple?
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after a very long time after the switch has been closed, what is the voltage drop vc across the capacitor in terms of vb?
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determine orbital velocity and oribtal period of a statellite at a location of 15000 miles above the surface of the earth
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(b) what mass of lead should be placed on the cube so that the top of the cube will be just level with the water surface?
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a) what are the s and n axes on an s-n diagram, and what does the region to the left and below the plotted line indicate?
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how long (in s) does it take a child on a swing to complete one swing if her center of gravity is 5.53 m below the pivot?
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a 3000 kg convertible rolls off a cliff going 30 mph in the southwest. it hits ground 5s later. what is the height of the cliff? how far does the car travel horizontally?
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a small ferryboat is 4.70 m wide and 6.50 m long. when a loaded truck pulls onto it, the boat sinks an additional 3.70 cm into the river. what is the weight of the truck?
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true or false: a tennis ball following a parabolic trajectory without air resistance has two forces acting on it; gravity downward and a force keeping it moving forward.
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an explosion of gas from a hawaiian volcano blows a rock into the sky. the rock has 2000j of kinetic energy. what was its mass if the rock had a velocity of 20m/s? ( ke
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