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A five volt heating element (E=5V) draws one ampere of current (I=1A) for five minutes.
(a) Find the electrical power input.
(b) sketch the power verus time ( in seconds) graph for 300s.
(c) find the electrical energy input produced in 5 minutes.
(d) Sketch the energy versus time graph for zero to 300 seconds.
Two boxes are connected by a cord running over a pulley, Calculate the tension in the cord and Calculate the acceleration of the system
A wave traveling along the x axis is described mathematically by the equation y = 0.17sin(8.1?t + 0.82?x), What is the speed of the wave
When a potential difference of 12V is applied to a wire 7.1m long and 0.34mm in diameter the result is an electric current of 2.2A. What is the resistivity of the wire
What is acceleration due to gravity
In one hand you hold a 0.12 kilogram apple, in the other hand a 0.29 kilogram orange. Find the magnitude of the force of gravity in the apple exerts on the orange
Four point charges, q, are fixed to the four corners of a square that is 11.2 cm on a side. An electron is suspended above a point at which its weight is balanced by the electrostatic force due to the four point charges, at a distance of 11 nm abo..
The average human eye can see visible light between 760. nm and 380. nm. What is the frequency of each wavelength?
A source vibrating at constant frequency generates a sinusoidal wave on a string under constant tension. by what factor does the amplitude change
find the components of the hiker's total displacement for the trip. Find the magnitude and direction of the displacement from base camp.
A dentist's mirror is placed 2.5 cm from a tooth. The enlarged image is located 6.1 cm behind the mirror. What kind of mirror (plane, concave, or convex) is being used
A hollow non-conducting spherical shell has inner radius R1 = 8 cm and outer radius R2 = 15 cm. a) Write an equation for the radial electric field in the region r
A 9.40kg projectile is fired vertically upward. Air drag decreases the mechanical energy of the projectile-Earth system by 69.5kJ throughout the projectile's ascent. How much higher would the projectile have gone were air drag negligible.
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