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A 1,500-kg car accelerates from rest to a speed of 25 m/s over a distance of 45 meters.
a. What is the change in the KE of the car?
b. What is the net work done on the car?
c. What is the net force applied to the car?
The resistance across your (wet) tongue, from one side to the other near the tip, is 375 ? (assume that your tongue is an ohmic material). What current is flowing through the saliva that coats your tongue
A 416 kg car moving at 17.8 m/s hits from behind another car moving at 11.3 m/s in the same direction. If the second car has a mass of 757 kg and a new speed of 13.0 m/s, what is the velocity of the first car after the collision?
A positive point charge is placed in a region of space where there is an electric field. If the charge is released from rest it will accelerate in a direction where the electric potential is. A negative point charge is placed in a region of space w..
Calculate the absolute pressure at an ocean depth of 750 m. Assume the density of sea water is 1020 kg/m3 and that the air above exerts a pressure of 101.3 kPa.
A cruise ship sails due north at 4.00 m/s while a coast guard patrol boat heads 42.0° north of west at 5.00 m/s. What are the x- and y-components of the velocity of the cruise ship relative to the patrol boat?
Describe the various elements necessary for effective leadership within a coalition. How does this apply to your professional practice or life?
The body temperature of an 80 kilogram person is 40oC. Find at what rate in watts must the person transfer thermal energy to reduce the body temperature to 37oC in 30 minute
There are four charges, each by a magnitude of 1.83C. Two are positive and two are negative. The charges are fixed to the corners of a 0.367-m square, one to a corner, in such a way that the net force on any charge is directed toward the center of th..
Relative to the ground, a car has a velocity of 14.5 m/s, directed due north. Relative to this car, a truck has a velocity of 24.5 m/s, directed 52.0° north of east. What is the magnitude of the truck's velocity relative to the ground?
For Quantum Mechanics, suppose a complex number is such that its real component is cos(x) for any value of x, and its imaginary component is sin(x). Does the square magnitude of this complex number depend on x? Explain why.
A powerful laser on Earth rotates its laser beam in a circle at a frequency of 0.030 Hz. How fast does the spot that the laser makes on the moon move across the moon's landscape?
A car starts from rest on a curve with a radius of 190 meter and accelerates at 1.50 m/s2. Find how many revolutions will the car have gone
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