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During a do-it-yourself roof repair project, you are on the roof of your house and accidentally drop your hammer. The hammer then slides down the roof at constant speed of 4.3 m/s. The roof makes an angle of 30° with the horizontal, and its lowest point is 10 m from the ground. (Ignore any effects due to air resistance.)
How long after leaving the roof does the hammer hit the ground?
What is the horizontal distance traveled by the hammer between the instant it leaves the roof and the instant it hits the ground?
A person who weighs 600 N is riding a 98 Nmountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in eachtire is 8.05*105 Pa, what is the area of contact between each tire and the ..
4.38 grams of diatomic oxygen (O2) in a 1.75 liter container creates a pressure of 315,000 Pascals. find the root-mean-square velocity of the molecules
A brave child decides to grab on to an already spinning merry-go-round. What is the moment of inertia of the merry-go-round with respect to its central axis
A 29.0-g object moving to the right at 19.0 cm/s overtakes and collides elastically with a 9.0-g object moving in the same direction at 15.0 cm/s. Find the velocity of each object after the collision
An astronaut has two objects that are identical in all respects,except that one is painted black and the other is painted silver. Initially, they are at the same temperature.
From the difference in mass of a hydrogen atom (Appendix B) to the mass of a proton and an electron (Table 1.5), estimate the binding energy of the electron in the hydrogen atom. Compare this to the ionization energy of the ground state electron a..
A catapult on a cliff launches a large round rock towards a ship on the ocean below. calculate the value of the angle theta
Evaluate maximum altitude?
A3.50kg object is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of24.0N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position.
The chemical atomic mass of hydrogen, with the two stable isotopes 1H and 2H (deuterium), is 1.00798. Use m(H1) = 1.007825 u, determine the natural abundance of 2H isotope
question a cepheid variable star is a star whose brightness alternately increases and decreases. the most easily
Water is moving with a speed of 5.4 m/s through a pipe with a cross-sectional area of 4.8 cm2. What is the speed at the lower level
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