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two forces act at an angle of 120°.the bigger force is of 40N and the resultant is perpendicular to the smaller one find the smallerforce?
Dave pushes his son on a sled across snow. As Dave pushes hisson speeds up. Which statement is true?
A uniform 1.4-kg rod that is 0.77 m long is suspended at rest from the ceiling by two springs, one at each end. Both springs hang straight down from the ceiling. The springs have identical lengths when they are unstretched.
Falls resulting in hip fractures are a major cause of injury and even death to the elderly. Obtain what acceleration does the hip undergo to reduce its speed to 1.3 m/s
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.
the microwave radiation left over from the big bang explosion of the universe has an average energy density of 3.95
A 70-kg stunt pilot pulls out a drive while flying at 50 m/s. If he flies a circular path with a radius of 200 m, what force does his seat exert on him at the bottom of the path
as a physics demonstration a fire syringe is used to demonstrate the high temperatures that can be reached inside a
question1a 380 kg piano slides 3.9m down a 27 degree incline and is kept from accelerating by a man who is pushing back
The height of a helicopter above the ground is given by h = 3.35t3, where h is in meters and t is in seconds. How long after its release does the mailbag reach the ground
Suppose a rocket launches with an acceleration of32m/s2. What is the apparent weight of an 80kg astronaut aboard this rocket
question a system consists of three particles with these masses and velocities mass 3.2 kg moving north at 3.1 ms mass
A sound wave with intensity 20 mW/m2 interferes destructively with a sound wave that has an intensity of 4 mW/m2. What is the intensity of the superposition of the two
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