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How much work is done by the horizontal force F_p = 150 N on the 18 kg block of the figure when the force pushes the block 5.5 m up along the 32 degree frictionless incline
Sunlight shines directly on to the wall of a large soap bubble (n = 1.33) which is floating in air (n=1). What is the minimum thickness it could have to produce completely destructive interference for
In a lightening bolt, current travels upward, from ground to cloud.Suppose that at the moment that a 35,000, what is the magnitude and direction of the magnetic force on the airplane
Animals in cold climates often depend on two layers of insulation: a layer of body fat [of thermal conductivity 0.200 W/(m*K)], How thick should the air layer (contained within the fur) be so that the
A 0.21-kg pinecone falls 15 m to the ground, where it lands with a speed of 9 m/s, How much work was done on the pine cone by air resistance
A curved plate of mass M is placed on the horizontal, frictionless plane as shown. How high the puck will shoot up from the plate
A 51.0 kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 235 N. What is the final speed of the crate after being pulled these 22.5 m
In a serious accident, a nuclear power plant%u2019s reactor vessel cracks, and all of the cooling water drains out. How long will the melting take
The first two dark fringes on one side of the central maximum in a single-slit diffraction pattern are 1.0 mm apart. What is the slit width
A construct force vector F = 2.0i + 4.0j N acts on an object as it means along a straight- line path. If the object is displacement is d = 2.0i + 5.0j m calculate the work done by vector F
Two tugboats pull a disabled supertanker. Each tug exerts a construct force of 2.00 x 10^6 N, What is the total work done by the two tugboats on the supertanker
An iron-core solenoid is 43cm long and 1.7cm in diameter, and has 720 turns of wire. What is the permeability %u03BC at this high field strength
An LRC series circuit with R = 100 Omega, L = 56mH, and C =1.7 muF is powered by an ac voltage source of peak voltage V0 = 210 V, Determine the phase angle of the source voltage relative to th
A midle C note (262 Hz) is sounded on a piano to help tune a violin string. When the string is sounded, nine beats are heard in 3.0s. How much is the violin string off tune?
Two forces, of magnitude F1 = 80.0 N and F2 = 45.0 N, act in opposite directions on a block which sits atop a frictionless surface. Find the work W1 done on the block by the force of magnitude F1= 80
You blow some more, and the film detaches to form a complete spherical bubble of radius 3.46 cm, which floats off the wand. What is the net flux through the bubble
A piece of thin spherical shell that has a radius of curvature of 90 cm is silvered on both sides. How far was the mirror moved
A 51.0cm -long solenoid 1.35 cm in diameter is to produce a field of 0.335mT at its center. How much current should the solenoid carry
A circular coil of 50 loops and a diameter 20.0 cm is lying flat on a tabletop, and carries a clockwise current of 2.50 A. A magnetic field of 0.450 T, What is the torque on the coil
A man whose mass is 80kg on the earth's surface is in a spacecraft at a height of 2 Earth radii above the earth's surface. At that height what is the acceleration due to gravity
a very long, straight solenoid witha cross-sectional area of 6.25cm^2 is would with 44 turns of wire per centimeter, What is the average inducted emf in the secondary coil
A piano tuner stretches a steel piano wire with a tension of 964N. What is the frequency of its fundamental mode of vibration
Three long parallel wires are 3.8cm from one another. Determine the magnitude and direction of the magnetic field at the midpoint of the side of the triangle between wire M and wire N
Suppose this rod can expand in sections like an umbrella shaft. Calculate the final angular speed if it expands in a totaly length of 2.0 m while rotating, assuming its angular momentum is conserved
The wheel weighs 70 kg, and is 120 cm in diameter. you mount the wheel by its central axis, What is the angular velocity of the wheel at the end of the fall