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Three blocks with masses m1=5kg, m2=10kg and m3=7kg are connected by two pieces of very light strings. The system is being pulled by a force P=88N on a frictionless flat surface.
a) Find the acceleration of the system. (Hint: treat all masses together as ONE SYSTEM.[ignore the tension for this part].
b) Find the tensions in both pieces of string.
In a 280-turn automobile alternator, the magnetic flux in each turn is ?B = 2.50 multiply.gif 10-4 cos ?t, where ?B is in webers, ? is the angular speed of the alternator, Determine the maximum emf in the alternator
A 20 g plastic ball is moving to the left at 35 m/s. How much work must be done on the ball to cause it to move to the right at 35 m/s
After the collision, the 0.177 kg puck has a speed of 1.38 m/s at an angle of 27? to the positive x axis. Examine the velocity of the 0.302 kg puck after the collision.
A car drives on a road which begins flat, then goes up and over the top of a hill and then goes down into a dip and back up to level ground.
A Carnot engine takes an amount of heat QH = 111 J from a high-temperature reservoir at temperature TH = 1030 °C, Find the amount of work that is obtained from this process
A superhero flies 272m from the top of a tall building at an angle of 32 below the horizontal. What is the vertical component of the superhero's displacement.
A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4.00?C, What is the temperature on a spring day when the resistance is 216.0
A screen is placed 1.0 meter away from the slits. Initially, you measure the interference pattern from the 2 slits on the screen. You then place the guanine film directly behind one of the slits, Determine the thickness of the guanine film
A tsunami is generated by an earthquake off the coast of Alaska. It has a wavelength of 677 km. It travels at a distance of 3536 km in a period of 5.49 hr. What is the frequency of the wave in Hz?
A skydiver is falling downward through the air. He weighs 241.5 pounds. There is an upward force of air friction opposing his fall. What is the upward force of air friction
A ball with a mass of 0.75 kg is thrown vertically into the air with an initial velocity of 10 m/s. establish the velocity of the ball when it hits the ground if it was initially released 2.0 m above the ground.
The sun transfers enegry to the earth by radiation at a rate of approximately 1.00kW per square meter of surface. what would be the length of its sides in kilometers and in miles
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