A marble that is rolling without slipping approaches a hill traveling at 8.50 m/s. How high vertically will the marble go: (a) if the hill is rough enough to prevent any slipping? (b)...
A marble that is rolling without slipping approaches a hill traveling at 8.50 m/s. How high vertically will the marble go: (a) if the hill is rough enough to prevent any slipping? (b)...
A solid uniform 3.33 kg disk has string of negligible mass wrapped around its rim, with one end of the string tied to the ceiling, as shown in Figure 9.7. The disk is released from rest and turns...
It is estimated that 1 million GWh of wave energy hits Australian shores annually. Australia’s electricity consumption in 2012 was 225 billion kWh. Assuming 10% of our shores had wave farms...
A location at an altitude of 1,220 m recieves annual rainfall of 790 mm. Calculate the average power density of rainwater in W/m2. You may assume that every drop of rain is captured in a dam and runs...
The average annual rainfall in the Newcastle region is 1133 mm and the average land elevation is 21 metres. What would the hydroelectric power density be for the Newcastle region assuming everydrop...
Acceleration of vertical: 9.8m/s^2 Horizontal distance: 26m Horizontal constant velocity: 23m/s Find height of horizontal
Maximum altitude of model rocket? I have been given the mass of rocket (23 grams), mass of the engine (16.2 grams), mass of propellant (3.12 grams), average thrust of engine (8 grams),...
The Pelamis Sea Snake wave energy collector has a peak power output of 750 kW, and can produce 2600 MWh annually.
A tidal power plant has been proposed for construction in the Newcastle region of England, where extreme tidal ranges are observed. The proposed plant would produce 100 GWh of electricity per annum...
A car travels 100 km in the first two hours, stops for half an hour and then travels 200 km in the next four hours. Find the average speed of the car.
A location at an altitude of 1,220 m recieves annual rainfall of 790 mm. Calculate the average power density of rainwater in W/m2. You may assume that every drop of rain is captured in a dam and runs...
The average annual rainfall in the Newcastle region is 1133 mm and the average land elevation is 21 metres. What would the hydroelectric power density be for the Newcastle region assuming everydrop...
A wind farm occupying a certain (unspecified) area in which the average wind speed is 3 metres per second (m/s) generates an average power of 5 kWh/d. If the wind speed is doubled to 6 m/s, what is...
An upper limit of 24 kWh/d/p on the power available from wind in Australia was presented, subject to certain assumptions. The installed wind capacity in Australia in December 2012 was 2.576 GW. The...
As an example, consider a cannon ball launched in the air. The cannon is on a cliff, 120 meters above sea level. If the cannon launches with a velocity of 300 m/s at 25°, how far from...
Calculate the capacity factor of the wind farm. Express your answer as a percentage.
A MLB player hits a homerun. Generally air resistance has quite a noticeable effect on the ball in professional baseball games. For now though we will neglect it. The ball came off the bat with a...
A uniformly charged disk of radius 35.0 carries charge with a density of 7.90x10-3 C/m2. Calculate the electric field on the axis of the disk at (a) 5.00 cm (b) 10.0 cm (c)...
A sphere of radius a carries a volume charge density rho = rho-sub-zero(r/a)**2 for r < a. Calculate the electric field inside and outside the sphere. (N.B.: rho-subscript-zero is a...
A cannon is set to launch horizontally, i.e. ?=0°. The ball lands a distance h below the cannon and a distance x horizontally away from the cannon. Find the initial velocity of the cannon...