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Question1
A subway train starting from rest leaves a station with a constant acceleration. At the end of 9.34 s, it is moving at 15.0374 m/s. What is train's displacement in ?rst 5.99628 s of motion?
Question2
The mass of a copper atom is 1.56 10-25 kg, and density of copper is 8 920 kg/m3.
(a) establish the number of atoms in 1 cm3 of copper
(b) imagine the one cubic centimeter as created by stacking up identical cubes, with one copper atom at the center of each. Establish volume of each cube.
(c) Find out the edge dimension of each cube that represents an estimate for the spacing between atoms.
The calorimeter is constructed of a material that has a specific heat of 0.10 cal/ g. ^{circ}C. When equilibrium is reached, what will be the final temperature.
A player bounces a 0.47 kg soccer ball off her head, changing the velocity of the ball from i = (9.2 m/s) + (-2.7 m/s) to f = (6.1 m/s) + (5.5 m/s). The ball is in contact with the player's head for 6.70ms.
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 33 500 V. find the electron speed just before the electron strikes the screen
The nearby town of Bellefonte, PA features the Gamble Mill, an old mill originally used to grind grain into flour - 1800s hydropower. At $0.07 per kWh, what is this energy worth per day
A speedboat starts from rest and accelerates at +2.01 m/s2 for 6.95 s. At the end of this time, the boat continues for the additional 5.70 s with an acceleration of +0.518 m/s2. Following this, the boat accelerates at -1.49 m/s2 for 8.20 s.
A generating station is producing 1.90 106 W of power that is to be sent to a small town located 5.0 km away. Find the power used to heat the wires if the power is transmitted at 1050 V
What is magnitude of the linear acceleration of the hoop . Elucidate using Newton's Second Law of Motion, why you can throw a golf ball further than a bowling ball, still though you throw both at the similar angle and with the same amount of force.
A vertical scale on a spring balance reads from 0 to 160 N. The scale has a length of 12.5cm from the 0 to 160 N reading. A fish hanging from the bottom of spring oscillates vertically at the frequency of 2.30 Hz. ignoring the mass of the spring, wha..
An electric field of 300 V/m is confined to a circular area d = 11.1 cm in diameter and directed outward perpendicular to the plane of the figure. If the field is increasing at the rate of 22.0 V/m·s, what are direction and magnitude of the magnet..
Physics - Classical Mechanics : explained, A student could either pull or push, at an angle of 300 from the horizontal, a 50-kg crate on a horizontal surface, where the coefficient of kinetic friction between the crate and surface is 0.20. The cra..
A positive charge Q1 = 3.00 µC is in the origin and a negative charge Q2 = -5.00 µC is at point x = 11m. Find the position of point P between the charges, where the electric potential equals zero.
A 900 N c rate s lides 12 m down a ramp that makes an angle of 3So with the horizontal. how much thermal energy is created
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