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While two forces act on a particle, it moves at constant velocity v→ = (3m/s)i^ - (4m/s)j^. One of the forces is f→1= (2N)i^ + (-6N)j^. What are other forces?
Waly Whacko claims to have invented a heat engine that will revolutionize industry. What error did he made in his choice of temperature scale
a small plastic sphere with a charge of -7.5 nc is near another small plastic sphere with a charge of 11 nc. if the
A spherical source radiates sound uniformly in all directions. At a distance of 13 m, the sound intensity level is 80 dB. What power is radiated by this source
An astronaut constructs a pendulum with a length of 1 meter on a new planet. If the period is 4 second, what is the acceleration due to gravity
a space station is a hollow cylinder of radius of 440m, that rotates to stimulate gravity by its centripetal acceleration. find the period of the rotation in seconds
In a period of 0.9 second, 5 x 1023 nitrogen molecules strike a wall of area 7.4 cm2. determine the pressure exerted on the wall
With brakes fully applied, a 1430kg car decelerates from a speed of 74km/hr. What is the work done by the braking force in bringing car to a stop.
A 23 kg box slides 4.0 m down the frictionless ramp shown that is raised 30 degress from the ground , What is the maximum compression of the spring
Suppose the same masses are used for a force table experiment as were used in Part 1, but each pulley is moved 180° so that the 0.100 kg mass acts at 200°, and the 0.200 kg mass acts at 270°. What is the magnitude of the resultant in this case
You have a 1.91-m-long stretched string with a mass of 19.3 g. When you oscillate the string at 440 Hz, obtain the tension in the string
A skater holds her arms outstretched as she spins at 150 rpm. What is the speed of her hands if they are 145 cm apart
An asteroid, whose mass is 1.70×10-4 times the mass of Earth, Calculate the period of revolution of the asteroid in years
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