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Q1. A pair of 12 {rm mu F} capacitors in a high-power laser are charged to 1.5 {rm kV}.
What charge is stored in each capacitor?
How much energy is stored in each capacitor?
Q2. The force vector A has a magnitude of 87.0 Newton's (N) and points due east. The force vector B has a magnitude of 124 N and points 73.1 ° north of east. Find (a) magnitude and (b) direction of A - B. (Give the direction as a positive angle with respect to due east). Find out the (c) magnitude and (d) direction of B - A. (Give the direction as a positive angle with respect to due west).
A 5-kg rock is dropped off a 30-m high building. If the rock is dropped from rest, what is the average power supplied by gravity
The box of a well-known breakfast cereal states that one ounce of the cereal contains 144 Calories (1 food Calorie = 4186 J). what is the heaviest barbell
Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. What is the approximate temperature at this altitude
A 2.46 x 10-2-kg block is resting on a horizontal frictionless surface and is attached to a horizontal spring whose spring constant is 110 N/m. The block is shoved parallel to the spring axis and is given an initial speed of 10.4 m/s, while spring is..
Only two forces act on an object (mass=3.76 kg), as in the drawing. Find the direction (relative to the x axis) of the acceleration of the object
a rock is thrown downward from the top of a building 168 ft high at an angle of 60 with the horizontal. how far from the base will the rock land
You are piloting a spacecraft whose total mass is 1170 kg and attempting to dock with a space station in deep space. How long should you sustain the firing of the retro-rocket
When one gallon of gasoline is burned in a car engine, 1.18 x 10^8 J of internal energy is released. Suppose that 0.99 x 10^8 J of this energy flows directly into the surroundings (engine block and exhaust system) in the form of heat. If 6.0 x 10^5 J..
A heat pump extracts 7.0*10^6 J heat per hour from a well at 280K and delivers its output heat into a house at 320K. what minimum work must be supplied to the heat pump per hour
What is an electric field between the plates? Towards which plate is it directed.
A space traveller whose mass is 104kg leaves earth. What are his weight and masson earth and in interplanetary space where there are no near planetary objects.
the speed of sound in helium is 965 m/s. if the density of helium is 0.179 kg/m^3, then what is the bulk modulus of helium
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