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Q1. A 1590 kg car starts from rest on a horizontal road and gains a speed of 61 km/h in 30 s (a) what is its kinetic energy at the end of the 30 s?
(b) What is an average power required of the car throughout the 30 s interval?
(c) What is an instantaneous power at the end of the 30 s interval, assuming that the acceleration is constant?
Q2. An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +7.35 x 105 m/s to a final velocity of 1.69 x 106 m/s whereas travelling a distance of 0.0827 m. The electron's acceleration is because of two electric forces parallel to the x axis: = 8.98 x 10-17 N and that points in the -x direction. Find the magnitudes of (a) net force acting on electron and (b) electric force.
The loop is leaving a region in which a 2.8 T magnetic field exists; the magnetic field outside this region is zero. During a time of 2.0 s, illustrate what is the magnitude of the change in the magnetic flux?
A 21 kg solid door is 220 cm tall, 94 cm wide. What is the door's moment of inertia for rotation about the vertical axis inside the door, 17 cm from one edge.
List all the possible set of quantum numbers for a hydrogen atom with n=3. What is the electrons total energy
Light from a helium-neon laser (lamda=633nm) is incident on a single slit. What is the largest slit width
A 0.458 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
The electric field in an xy plane produced by a positively charged particle is 4.94(6.9i + 4.4j)N/C at the point (5.9, 5.8) cm, Determine the x and y coordinates of the particle
Light of wavelength 572 nm illuminates a single 0.72 mm wide slit. What is the width of the central maximum
Why is the normal force of an object zero at the top of a hill (such as the hill of a roller coaster)? I'm doing a circular motion unit and I found a few problems where this is the case, and I was wondering how it works.
The motion of a particle is given by x = A sin^3(?t). What is the amplitude of the particle's motion
A stiff, 15cm -long tube with an inner diameter of 2.5mm is attached to a small hole in the side of a tall beaker. What is the volume flow rate through the tube
Mars has an orbital period of 1.881 Earth years, Develop the relation between semimajor axis and inclination for a Mars circular sun-synchronous orbit
Find the frequency in terahertz of visible light with a wavelength of 463 nm in vacuum
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