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A boat has a mass of 6800 kg. Its engines generate a drive force of 4100 N, due west, while the wind exerts a force of 800 N, due east, and the water exerts a resistive force of 1200 N due east. What is the magnitude and the direction of the boat's acceleration?
A person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her clothes to the walls of the room. what is the temperature of the outer surface of the clothes
A ball whose diameter is 6 cm is placed 70 cm in front of a convex spherical mirror. If the focal length of the mirror is -30 cm, what is the diameter of the ball as viewed in the mirror
Lead has a latent heat of fusion of 2.32x10^4 J/kg, a specific heat of 128 J/(kg K), and a melting point of 228°C. determine velocity needed to achieve melting the bullet
The average speed of a nitrogen molecule in air is about 6.70 * 10^2 m/s, and its mass is about 4.68 * 10^-26 kg. What average force does the molecule exert on the wall
A typical American family uses 700 kWh of electricity a month. On average, what is the resistance of a household
A uniform horizontal wire with a linear mass density of 0.50 g/m carries a 1.8 A current. It is placed in a constant magnetic field with a strength of 4.00 x10-3 T. The field is horizontal and perpendicular to the wire. Neglect the magnetic field ..
Consider a vibrating piano string. The string is under a tension T, has a length L and diameter d. What is the frequency f' for the second string
a person is going for a morning jog on the deck of a cruise ship is running towards the bow front of the ship at 2.0ms
from the following list of aqueous solutions and water select the one with the highest boiling point.a 0.75 m naclb 1.0
A 276g ball is tied to a string. It is pulled to an angle of 5.00 degrees and released to swing as a pendulum. How long is the string
A square loop of wire consisting of a single turn is perpendicular to a uniform magnetic field. The square loop is then re-formed into a circular loop, which also consists of a single turn and is also perpendicular to the same magnetic field.
A head-butter can accelerate himself from rest to head-butting speed of 8.5 m/s, At the moment of impact, what impulse does the head butter produce
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