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A car accelerates from 0 to 60 mph in 4.5 seconds.
a.) What is the average acceleration, in mph/s?
b.) What is the average acceleration, in m/s2?
A certain sound has an intensity of 2.0647×103 W/m2. What is the sound intensity level in decibels
Common light bulbs are designed for use with120 V and are rated by the power dissipated as heat and light. What is the resistance of a 40W bulb?
The two blocks areconnected by heavy uniform rope with mass of 4.00 kg. An upward force of 200N is applied as show in fig P4.54 a) Draw a three free body diagrams: one for the 6.00 kg block, one for the 4.00 kg rope, and another for the 5.00 kg block..
Jeff of the Jungle swings on a 7.6- vine that initially makes an angle of 47 with the vertical. If Jeff starts at rest and has a mass of 88 , illustrate what is the tension in the vine at the lowest point of the swing?
an electron has a kinetic energy of 2.80 x 10-17 j. it moves on a circular path that is perpendicular to a uniform
A girl pulls a sled along a level dirt road by means of a rap attached to the front of the sled. The mass of the sled is 40 kg. the coefficient of kinetic friction is uk=0.60, and the angle between the rope and the road is 30 degrees. What pull mu..
find the gravitational attractive force between the sun and the entire galaxy. (The mass beyond the sun's orbit exerts zero net gravitational force.)
For the differential rod worth data given below, a. Construct differential and integral rod worth curves. b. Using the integral rod worth curve (from Part a), find the reactivity inserted by moving the rod from 6 inches withdrawn out to 12 inches ..
A metal wire of resistance 2.20 multiply.gif 10-8 omegacap.gif is cut into four equal pieces that are then connected side by side to form a new wire the length of which is equal to one-fourth the original length
An energy-efficient lightbulb, taking in 24.0 W of power, can produce the same level of brightness as a conventional lightbulb operating at power 100 W. The lifetime of the energy-efficient bulb is 10 000 h and its purchase price is $4.20, whereas..
I have a simple circuit, with two resistors connected in series, R1 at 10 Ohms, and R2 at 100 Ohms. Would there be a difference in their total resistance if I just measure it across both of them, and when I add, but not turn on, a power source. Wo..
Picnickers see a lightning flash and hear the resulting thunder 9.5 s later. If the storm is traveling at a rate of 19 km/h, how long, in minutes, do the picnickers have before the storm arrives at their location?
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