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If an object is projected upward with a velocity of 7.3 m/s at an angle of 25 degrees, what is:
a) Its horizontal velocity (vx)?
b) Its initial vertical velocity (vy0)
c) If the object is launched from level ground and then lands on level ground, how far in the horizontal direction did it travel?
In 1960 a Tampa, Florida, mother reportedly raised one end of a car that had fallen onto her son when a jack failed. how much work did her force do on the car
A 14 liter tank of helium is at a pressure of 164 kPa at a temperature of 0 C, What is the speed of the helium atoms in the tank at this new volume, How many moles of helium are there in the tank
An object placed 14.6 cm from a concave mirror produces a real image 7.90 cm from the mirror. where is the new image located as measured from the mirror
If the 2 kg mass slides on a horizontal frictionless surface, what is the speed of the mass 4 kg while it has fallen a distance 0.4 m downward from its rest position.
A clay vase on a potter's wheel experiences an angular acceleration of 8.21 rad/s2 due to the application of a 17.7-N m net torque. Find the total moment of inertia of the vase
A 35.0-kg child swings in a swing supported by two chains, each 2.92 m long. The tension in each chain at the lowest point is 430 N. Find the child's speed at the lowest point
Four horses are tethered at 4 corners of a square field of side 70 metres so that they just cannot reach one another. What is the area left ungrazed by the horses
How much energy is given to the cell during this pulse. How many years would it take the earth to move 1.0 mm at this speed.
A heat pump uses an ideal Carnot cycle to heat a house. The outside air has a temperature of 294 K, In the scenario described in the previous question, how much energy is transferred out of the outside air
A 2.71 g sample of KCl from the chemistry stockroom is found to be radioactive, and it is decaying at a constant rate of 4490 Bq. Calculate the half-life of this nuclide
A turtle crawls along a straight line, which we will call the x-axis with the positive direction to the right. The equation for the turtle's position as a function of time is x(t) = 50.0 cm +(2.00 cm/s)t -(.0625 cm/s^2)t^2 At what time is the turt..
A car with the mass of 1500.0 kg (initially moving to the right) collides with a bus that has a mass of 5000.0 kg. What is the initial velocity of the bus
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