The Pelamis Sea Snake wave energy collector has a peak power output of 750 kW, and can produce 2600 MWh annually.
The Pelamis Sea Snake wave energy collector has a peak power output of 750 kW, and can produce 2600 MWh annually.
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 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...
Calculate the capacity factor of the wind farm. Express your answer as a percentage.
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.
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...
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...
1.) A state trooper, observing car A traveling at an excessive speed, starts from rest and, with an initial, constant acceleration of 2.0 m s–2, chases the car. Car A, initially...
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...
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 3rd baseman completes a double play by stepping on third base and throwing the baseball across the infield diamond to the first baseman. If the 3rd baseman throws the ball with an initial speed...
Determine by trigonometry the required angle θ that would ensure that the resultant vector of the two vectors shown only has a horizontal (x) component. If the hypotenuse of the triangle...
Two forces, P and Q are applied to the lid of a storage bin as shown in the figure on the next page. Knowing that P= 48 N and Q= 60 N, determine by trigonometry the magnitude and direction of the...
You decide to drop an apple from rest from the observation platform in the statue of liberty’s crown. The height h from which the apple is released is 44.5 meters above the shoulders of your friend...
A 100 g ball is thrown straight up in the air from a height of 1.5 m above the floor. The ball just reaches the ceiling 10 m above the floor. What was the initial speed of the ball? What...
You hold a paintball gun 1.5 m above the ground and fire it straight up. Estimate the muzzle velocity if you find that it takes 18.4 seconds for the paintball to fall to the ground. ...
A falling stone takes 0.15 seconds to travel past a window that is 1.0 meter tall. From what approximate height above the top of the window did the stone fall?
I've been taking an online course in electronics (basic), and I've been having a hard time solving this circuit, pic: http://bit.ly/1rlDP1V The goal is to find value of v3,...
Please show this using an x-axis that is parallel to the incline, and please show again using an x-axis that is horizontal. Thank you.