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The tank is shelling at a target that is 4km away and 60m above ground. If the shell is being fired at 30degrees above the horizontal, what should be the release speed of the shell?
In daily life we see many cases of people who are caught misrepresenting things and who soon after that are excused and accepted by their contemporaries. How is this different in science.
A pump, submerged at the bottom of a well that is 35m deep, is used to pump water uphill to a house that is 50m above the top of the well, as shown above. The density of the water is 1000 kg/m3. All pressures are gauge pressures. Top of well pipe to ..
A solid, frictionless cylindrical pulley with a mass of 3kg and a 0.420 m radius is used to draw water from a well. A 1.50kg bucket is attached to a cord that is wrapped around the pulley. If the bucket starts from rest at the top of the well and ..
What is the resistance of a lightbulb that uses an average power of 40.0 W when connected to a 60.0-Hz power source having a maximum voltage of 132 V
You push with a 20 N horizontal force on a 2 kg mass resting on a horizontal suface against a horizonatal friction forces of 12N. What is the accerlation.
A hair dryer has a power rating of 1400 W at 110 V rms. Assume the hair dryer circuit contains only resistance. What is the rms current drawn by the hair dryer
A 2.00 µC charge is experienced by 0.438 N force in an electric field. What is the magnitude of the electric field?
Describe Erikson, Levinson, cognitive developmental theorists, Kohlberg, behavioral theorists, Bronfenbrenner, Holland, the eclectic theory, and composite theory.
A 5.25 kg ball of clay is thrown downward from a height of 2.79m with a speed of 4.41 m/s onto a spring with k=1530 N/m. The clay compresses the spring a certain maximum amount before momentarily stopping.
A puck of mass m1 = 63g and radius r1 = 4.30 cm glides across an air table at a speed of = 1.50 m/s. It makes a glancing collision with a second puck of radius r2 = 6.00 cm and mass m2 = 115 g (initially at rest) such that their rims just touch.
If the flare is fired at the same angle over the flat Sea of Tranquility on the moon, where g = 1.6 m/s2, describe what is its horizontal range?
You are in a kayak which can move at a velocity of 2.6 m/s when in still water. You are attempting to cross a river which is 110 across, How long does it take you to get to the other side
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