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A mass of 5.10 kg is suspended from a 1.27 m long string. It revolves in a horizontal circle as shown in the figure. The tangential speed of the mass is 3.72 m/s. Calculate the angle between the string and the vertical.
After a day of testing race cars, you decide to take your own 1420 kg car onto the test track. While moving down the track at 10 m/s, you regularly accelerate to 32m/s in 10 s. What is the average net force that you have applied to car during the ..
A baseball approaches home plate at a speed of 46.0 m/s, moving horizontally just before being hit by a bat. What is the average vector force the ball exerts on the bat during their interaction
A 390 g glass coffee cup is at a room temperature of 20?C. It is then plunged into hot dishwater at 80 ?C. how much heat does the cup absorb
A meterstick (L = 1 m) has a mass of m = 0.133 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark. find the tension in the left string right
A wire has a mass per unit length of 0.500 g/cm. what is the magnitude and direction of the minimum magnetic field
Two small nonconducting spheres have a total charge of 93.1 ?C. When placed 1.01 m apart, the force each exerts on the other is 11.5 N and is attractive. What is the charge on each?
The position of a particle is given in cm by x = (5) cos 5?t, where t is in seconds. Find the maximum acceleration of the particle
Calculate the vertical component of its velocity by the time it hits the ground
Determine the magnitude of door's angular acceleration.
What is the acceleration of a 747 jumbo jet, mass 31,000 kg, in takeoff when the thrust for each of its four engines is 28,000 N?
An infinite non conducting sheet has a surface charge density σ = +5.80 pC/m2. (a) How much work is completed by electric field because of the sheet if a particle of charge q = +1.60 × 10-19 C is moved from the sheet to a point P at distance d = 3.56..
A concave shaving mirror has a focal length of 95 cm. find the image position of a cologne bottle placed in front of the mirror at a distance of 165cm. Calculate the magnification of the image. Is the image real or virtual? Is the image inverted o..
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