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Q1. An 1100- car is held in place by a light cable on a very smooth (frictionless) ramp. The cable makes an angle of 31.0 above the surface of the ramp, and ramp itself rises at 25.0 above the horizontal. How hard does the surface of the ramp push on car?
Q2. A 110 kg mail bag hangs by a vertical rope 4.0 m long. A postal worker then displaces the bag to a position 2.0 m sideways from its original position, always keeping the rope taut. As the bag is moved to this position, how much work is completed by the worker?
The mass of a string is 1.00 10-3 kg, and it is stretched so the tension in it is 120 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string?
A person stands at a point,241 min front of the face of a sheer cliff. If the person shouts, how much time will elapse before an echo is heard
Find out the angle between the filter's polarizing axis and the direction of polarization of light necessary to increase the ratio of the clouds' intensity to that of blue sky so that it is three times the normal value.
a long horizontal wire carries a current of 48 amps. A second wire, made of 2.5 mm diameter copper wire and parallel to the first, is kept in suspension magnetically 15 cm below. Determine the magnitude and direction of the current in the lower wi..
An aircraft weighing 803 N is accelerated at 10 m/s2 for 9 seconds, at which time the aircraft launches. How much work was done on the aircraft
Two specks of dirt are trapped in a crystal ball, one at the center and other halfway to the surface, what is the refractive index of the ball
The index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660. What is the angular separation between the red and violet components of the spectrum that emerges from the glass
A 1320-kg racecar is driving around a circular track of radius 161 m. What is the magnitude of the net force acting on the vehicle
What is the magnitude of the induced electric field 0.2070cm from the axis of the solenoid? Give your reply in Volts/meter in scientific notation to three significant digits.
A bullet of mass 0.018kg traveling horizontally at a high speed of 290m/s embeds itself in a block of mass 4 kg that is sitting at rest on a nearly frictionless surface.
Two capacitors have the same plate separation, but one has square plates and the other has circular plates, at is the dielectric constant kcircular of the material between the circular plate
An electron is accelerated by a constant electric field of magnitude 285 N/C. a. Find the acceleration of the electron (N) b. If the string can withstand a maximum tension of 0.180 N, what is the smallest value d can have before the string breaks.
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