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A car with a mass of 1104 kg is coasting in neutral on a straight,level road. It slows down, and its speed as a function of time is given by the equation: v(t) = a - bt + ct2 Constant/Value/Units = a/26.8/m/s, b/0.310/m/s^2, c/ 2.10·10^-3/m/s2 Question) At a time of 28.0 s the speed, as given by the above equation, is 19.77 m/s. Calculate the power which the engine must deliver (to compensate for air resistance and rolling resistance) in order to maintain that speed.
You fly from Boston's Logan Airport, at sea level, to Denver, at an altitude of 1.6 . Take your mass as 69 and the zero of potential energy at Boston. What is your gravitational potential energy in Denver
Light of wavelength 530 nm is incident on two slits that are spaced 1.0 mm apart. How far from the slits should the screen be placed
A beam of electrons is accelerated through a potential difference of 10kV before entering a velocity selector. If the B-field of the velocity selector is perpendicular to the velocity and has a valueof 0.05 T, what value of the E-field is required..
A single-turn current loop, carrying a current of 4.82 A, is in the shape of a right triangle with sides 72.8, 121, and 141 cm. The loop is in a uniform magnetic field of magnitude 57.9 mT whose direction is parallel to the current in the 141 cm side..
A particle with charge 6.40x10^-19 C travels in a circular orbit with radius 4.68 mm due to the force exerted on it by a magnetic field with magnitude 1.65 T
A person's body is producing energy internally due to metabolic processes. What is the temperature of the coldest room in which this person could stand and not experience a drop in body temperature
A worker on scaffolding 65 ft above the ground needs to lift a 340 lb bucket of cement from ground to a point 30 feet above the ground by pulling on a rope weighing 5 lb/ft. How much work is required.
A garden hose is attached to a water faucet on one end and a spray nozzle on the other end. Find the gauge pressure of the water
In an experiment the speed of sound in air, a student a measures a column of air in a resonance tube. determine the ambient temperature in the room in degrees C
A famous monument is 565 feet tall.It is composed of a510-foot pillar topped by a 55-foot pyramid.The base of the pillaris 57 feet wide.The base of the pyramid is 36 feet wide. Find the slope of the sides of the pyramid?
Two 4.2 cm X 4.2cm metal plates are separated by a 0.19mm thick piece of Teflon. What is the capacitance? What is the maximum potential difference between the disks?
A uniform electric field of magnitude 271 V/m is directed in the negative x direction. A +12.7 ?C charge moves from the origin to the point (x, y) = (15.5cm, 46.0 cm). What was the change in the potential energy of this charge?
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