Ultimate Physics Study Guide - Questions & Answers

imagine that five 10.0-ohm resistors are connected in parallel. what is the effective resistance of this combination of resistors?
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what is the wavelength of an electromagnetic wave that has a frequency of 3 kilohertz? a. less than 1 km b. 1 km c. more than 1 km
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if a planet (or asteroid) orbited the sun at three times the distance of mars, its orbital speed would be
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on average, how much time separates the rise of one civilization in the galaxy from the rise of the next?
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find the maximum transverse speed of a point on the string. (f) what would be the equation y1x, t2 for this string if it were vibrating in its eighth harmonic?
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when you looked at solar activity on the heliophysics event registry website, on which date did you find activity on the sun?
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perceiving the color, motion, and form of a bird in flight illustrates a. parallel processing. %. opponent-process theory. q. trichromatic theory. d. serial processing. place theory.
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real springs have mass. will the true period and frequency be larger or smaller than given by the equations for a mass oscillating on the end of an idealized massless spring? explain
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a mass m1 on an incline is attached by a massless string to a second mass m2 hanging from a pulley as shown. the incline has a rough surface so there is a frictional force of magnitude ffric on mass m1. mass m1 is observed to be sliding down the incline at constant speed v. how does the magnitude of the tension ft in the string pulling on m1 compare to the magnitude of the force of friction ffric acting on the mass m1? neglect any air resistance
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what is the velocity of an electron that goes through a 10 v potential after initially being at rest?
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two blocks connected by a cord passing over a small, fric- tionless pulley rest on frictionless planes (fig. p5.90). (a) which way will the system move when the blocks are released from rest? (b) what is the acceleration of the blocks? (c) what is the tension in the cord?
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a simple harmonic oscillator takes 11.5 s to undergo five complete vibrations. (a) find the period of its motion. s (b) find the frequency in hertz. hz (c) find the angular frequency in radians per second. rad/s
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in an lc circuit containing a 40-mh ideal inductor and a 1.2-mf capacitor, the maximum charge on the capacitor is 45 mc during the oscillations. what is the maximum current through the inductor during the oscillations? group of answer choices 6.5 a 3.7 a 10 a 2.5 a 42 a
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earths land areas, oceans, and atmosphere maintain fairly constant average temperatures. what is the best explanation for these constant average temperatures?
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A simple harmonic wave of wavelength 18.7 cmand amplitude 2.34 cm is propagating in the negative x-direction at 38.0 cm/s.a. Find its angular frequency.b. Find its wave number.
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8. A child on a bike traveled 20 m east, and then 30 m north. What was thedisplacement of the child?OOCLEAR ALL36 m, north50 m, northeast36 m, northeast50 m, north
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The body reaches a velocity of 6 m/s. Calculate the distance travelled by the object to reach this velocity.
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A 40.0-kg ice-skater glides with a speed of 2.0 m/s toward a 10.0-kg sled at rest on the ice. The ice-skater reaches the sled and holds on to it. The ice-skater and the sled then continue sliding in the same direction in which the ice-skater was originally skating. What is the speed of the ice-skater and the sled after they collide?
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in a popular new hockey game, the players use small launchers with springs to move the 0.0030-kg puck. each spring has a 120-n/m spring constant and can be compressed up to 0.020 m. what can you determine about the motion of the puck using this information? make a list of quantities and determine their values.
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two parakeets sit on a swing with their combined center of mass 16.0 cm below the pivot. at what frequency (in hz) do they swing?
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what is the effective spring constant k of the two-spring system? express the effective spring constant in terms of k 1 and k 2 .
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what was the value of the scale factor a when the dark energy density became equal to the matter density? show your work, please.
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describe the hypothesis of the formation of the moon and include any evidence to support the hypothesis.
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what is the relationship between the velocity of a spinning object squared and the radius of revolutionj
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