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1. The total speed of a projectile at the greatest height v1 is √6/7 of its total speed when it is at half its greatest height. What is the angle of projection?
(a) 60º (b) 45º (c) 30º (d) 50º
The .50 kg box shown below is sliding with an unknown initial velocity before it slides down the incline and then collides with a mass less spring of spring constant 4.0 N/m, what was the initial velocity of the box
A space traveler weighs 550 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
Assume you look at an object through a rectangular prism of thickness d and index of refraction n. Determine the location of the image of the object
The stationary siren on a firehouse is sounding at 85 Hz. What is the frequency received by a firefighter racing toward the station with a speed of 108km/h?
a car is initially moving at 60 ms and must stop in 100 m. what minimum constant acceleration must the car
A fire helicopter carries a 649 kg bucket of water at the end of a 18.7 m long cable. Flying back from a fire at a constant speed of 44.2 m/s, Determine the force of air resistance on the bucket
a particle with charge -6.24 times 10-6 coulombs is released at rest in a region of constant uniform electric field.
An antifreeze solution is made by mixing ethylene glycol (? = 1116 kg/m3) with water. determine the volume percentage of ethylene glycol in the solution
Compute the linear momentum and angular momentum of a Frisbee of mass 0.125 kg if it has a linear speed of 2.25 m/s and an angular velocity of 47.5 rad/s
Vector A has a magnitude of 6.00 m and vector be has a magnitude of 3.00 m. What is the two possible values for the scalar product of these two vectors
A dulcimer string which is supposed to vibrated at 256 Hertz actually vibrates at 250 Hertz. Find by what percentage should the tension be changed
34g of copper pellets are removed from a 300 degrees celcius oven and immediately dropped into 70mL of water at 22 degrees celcius in an insulated cup. What will the new water temperature be
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