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a. The mass of cyclist together with the bike is 90 kg. Calculate the increase in kinetic energy if the speed increases" from 6"0 km/h to 12 km/h.
We have studied four different laws authored by Sir Isaac Newton. For each of the following, indicate which law is best for the task described. Calculating the force exerted on a satellite by the Earth
Two laser beams are simultaneously illuminating a diffraction grating. One laser has a wavelength of 632.8 nm. and the other has a wavelength of 637.8 nm. How many slits per millimeter are required to resolve the first order diffraction bright spots...
a block of mass m slides down a frictionless plane inclined at an angle with the horizontal. the gravitational force is
Two identical conducting spheres each having a radius of 0.500 cm are connected by a light 1.60 m long conducting wire. estimate the tension in the wire.
A beam of red light, whose frequency is 4.30*10^14, passes through a piece of dense flint glass (n=2.13) in 25 ps (picoseconds). Find the thickness of the glass
Most geologists believe that the dinosaurs became extinct 65 million years ago when a large comet or asteroid struck the earth, What percentage is the earth's speed around the sun
A 100kg box slides down a ramp that has 60.0degrees slope. The coefficient of kinetic friction between the box and the ramp is 0.250. What is the work done by the gravitational force
A 1meter long rod has a circular cross-section with an area of 2 m^2, How far from the left end is the center of mass of the rod
A wheel starts from rest and reaches an angular speed of 6.0 rad/s while turning through 2.0 revolutions. What is the average angular acceleration of the wheel
A 0.300 kg hammer is moving horizontally at 6.00 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. Calculate the duration of the impact
A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from zero to 9.72 m/s in 3.84 s. find the average force experienced by the passenger
A 20.0 kg box slides up a 12.0 m long incline at an angle of 30.0 degrees with the horizontal. then the increase in the kinetic energy of the box is
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