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A British Airways Boeing 777 accelerates from rest to lift-off speed of 73.46 m/s in 28.50 s. Each of the plane's two jet engines provides a forward force (thrust) of 119.00 kN.
1. What is the mass of the plane?
2. How far does the plane travel down the runway before lift-off?
A ray of light is incident on a flat surface of a block off utilize quartz that is surrounded by water. The angle of refraction is 22.6°. Find the angle of reflection.
A 5.0 gram piece of Styrofoam carries a net charge of - 5.0 X 10-6 C and floats above the center of a large horizontal sheet of plastic that has a uniform charge density on its surface. What is the charge per unit area on the plastic sheet?
Consider the system of capacitors shown in the figure below (C1= 2.00 uF, C2= 3.00 uF). Find the total energy stored by the group
a 142 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizantal is increased to ALPHA, If the coefficient of static friction between the crate and the ramp is 0.65, what is the angle alpha when the crate just begins t..
Find the energy of the capacitor at the moment.
In an experimental set-up, where a wire with a linear mass density of 1 g/m was clamped at one end, at what frequency would you need to vibrate the wire
A capacitor is connected across an ac source that has voltage amplitude 61.0 A and frequency 81.5 Hz. What is the phase angle ? for the source voltage relative to the current? Does the source voltage lag or lead the current?
the collision between a hammer and a nail can be considered to be approximately elastic. estimate the kinetic energy
When point charges q1 = +7.7 µC and q2 = +5.7 µC are brought near each other, Determine the distance between the charges
question a 5 turn loop of wire with a radius of 4cm moves toward a 0.15t magnetic field in a 3 second time interval.
A star with the same mass and diameter as the sun rotates about a central axis with aperiod of about 28.4 days. What would be the new rotation period (s) of the star
A 0.50-kg croquet ball is initially at rest on the grass. When the ball is struck by a mallet, the average force exerted on it is 225 N. how long was the mallet in contact with the ball
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