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You are a professional frontier re-enactor who specializes in making lead shot. To do this you put 1.3 kg of ice into 1.3 kg of water, both at 0 C, into an insulated bucket. To make the shot, you carefully drop 1 g droplets of molten lead which is exactly at the melting temperature of 327.5 C into the bucket of ice-water. The molten lead solidifies into perfect spheres and fall to the bottom of the bucket a)How much energy is required to cool a single droplet of molten lead all the way down to 0 C b)What is the maximum number of lead shot balls can you make without changing the ice-water temperature from 0C.
A force vector has a magnitude of 594 newtons and points at an angle 37o of below the positive x axis. What are (1) the x scalar component and (2) the y scalar component of the vector.
What should the charge (sign and magnitude) of a particle of mass 1.47 be for it to remain stationary when placed in a downward-directed electric field of magnitude 610.
The weight of passengers on a roller coaster increases by 51 percent as the car goes through a dip with a 39 radius of curvature.What is the car's speed at the bottom of the dip.
Soccer ball is kicked with a speed of 11.50 m/s at an angle of 30.0° above the horizontal. If the ball lands at the same level from which it was kicked, how long was it in the air.
What is the speed of the 2 cars as they move together after the collision.
A cell membrane is composed of lipid molecules and approximately 10.48 nm thick. If the dielectric constant of the lipid is k = 5, what is the approximate capacitance of a spherical cell that has a diameter of 10.48 mu m?
A steady torque of 23-N•m is applied to a grindstone whose moment of inertia is 0.130 kg•m2. Using energy principles, and neglecting friction, determine the angular speed after the grindstone has made 13.0 revolutions.
Determine the least value of n for which there is total internal reflection on the vertical surface.
A 23 kg boom of length 6 m is supported by a cable that has a breaking tension of 1200N. The cable is perpendicular to the boom and is attached 4.5m from the pivot. What is the utmost load that can be suspended from the end of the boom.
presume you had job offers from two companies that differed only in how often they produced CEOs. Would these differences affect your decision.
A pendulum of length 50cm is pulled 30 cm away from vertical axis and free from rest. What would be its speed at the bottom of its swing.
An electric wire that has a mass of 5 kg for a 20m length is strung between two poles 20 m apart. What must be the tension in the wire if it is to take .80 seconds for a pulse to travel along the wire from one pole to the other.
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