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Problem: An 800.0 kg roller coaster car is at rest at the top of a 95 m hill. It rolls down the first drop to a height of 31 m. When it travels to the top of the second hill, it is moving at 28 m/s. It then rolls down the second hill until it is at ground level. Please draw a picture of the roller coaster drop and calculate the kinetic and potential energy at the top and bottom of each hill.
A block of mass 0.14 kg is placed on a vertical spring of constant 5723 N/m and pushed downward, compressing the spring 0.08 m. What height above the point of release will the block reach
During each heartbeat, approximately 68 cm3 of blood is pushed from theheart at an average pressure of 105 mm-Hg. Calculate the power output of the heart
A bowling ball (mass 7.2 kg, radius = 0.11 m) and a billiard ball (mass = 0.38 kg, radius = 0.028 m) may each be treated as uniform spheres. what is the magnitude of the maximum gravitational force that can exert on the other?
A railway is laid so that there is no stress in rail at 10º C- Calculate the stress in rails at 60º C if there is no allowance for expansion
a very long uniform line of charge has charge per unit length 4.7410-6 cm and lies along the x-axis. a second long
A woman is running at a constant velocity of 5 m/s in an attempt to catch a stopped bus 11m ahead of her. Though, it pulls away from her with a constant acceleration of 1 m/s2. How much time does it take her to reach the bus if she keeps running a..
Helicopter blades withstand tremendous stresses. Calculate the centripetal acceleration at the tip of a 4.00 m long helicopter blade that rotates at 300 rpm
Determine the mass flow rate of steam extracted from the turbine.- The system's isentropic Rankine cycle thermal efficiency.
A singly charged particle accelerated through a potential difference of 115V has a wavelength of 4.4fm. Find it's mass. An electron is accelerated through a potential difference of 400V. Find its wavelength and momentum.
The asymptotic wavelength
A certain pipe has resonant frequencies of 504 Hz, 648 Hz, and792 Hz, with no other resonant frequencies among these values.
Suppose that an Egyptian farmer claims to have discovered a linen burial cloth used during Egypt's Middle Kingdom some 4000 years ago, How old is the cloth
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