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An aircraft weighing 819 N is accelerated at 11.7 m/s2 for 5 seconds, at which time the aircraft launches. What is the force required to launch the aircraft
A uniform board is leaning against a smooth vertical wall. The board is at an angle (theta) above the horizontal ground. Find the smallest value for the angle (theta), such that the lower end of the b
A circuit consists of two 150.?k? resistors in series with an ideal 12.0?V battery. Calculate the potential drop across one of the resistors
A circuit consists of two 2.37?k? resistors in series with an ideal 9.00?V battery. Calculate the current flowing through each resistor
A piece of balsa wood of 0.3 g/cm3 is released after being completely submerged underwater. What is the magnitude of the initial acceleration of the wood
A wind is blowing straight from north to south at an unknown speed. When you hold up a piece of thread you can see that the wind stretches it out so that it points from your hand to the south. What
What are the maximum and minimum inductance, Lmax and Lmin, that define the range of inductance that is safe to use if the capacitor voltage is not to exceed 145V
A block of mass m = 3.40 kg is pushed a distance d = 2.30 m along a frictionless, Determine the work done by the net force on the block.
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. Determine the induced emf within a circle of tissue of radius 1.9 mm
Suppose that 3.00 g of hydrogen is separated into electrons and protons. What is the resulting compressional force on the Earth
what is the force per meter on a lightning bolt at the equator that carries 20,000 amps perpendicular to the earths's 3.00 x 10^3 T field
A 86 kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 380N. What is the final speed of the crate
Light shone from a mystery material into water undergoes total internal reflection at an angle of 33.4 degrees. What is the index of refraction of the mystery material?
Two speakers are emitting simple harmonic sound waves of frequency 258 Hz and 256 Hz. Describe the sound heard by a listener
2 hollow conducting cylindrical shells (radius of 1 cm and 2 cm). The inner cylinder carries a current of 5 A outwards. what is the magnitude of the magnetic field at radius of 2.5 cm
Suppose that we align a compass needle with the horizontal component of the Earth's magnetic field, What is the size of the horizontal component of the Earth's magnetic field
The aorta carries blood away from the heart at a speed of about 40 cm/s and has a radius of approximately 1.1 cm. determine the approximate number of capillaries in the human body
A jackhammer causes a sound intensity of 95 bB at a point where a person is standing. What is the sound intensity level at the position of the listener
On a typical mission, the Space Shuttle (m = 2.00 106 kg) orbits at an altitude of 250 km above the Earth's surface. Find the speed of the shuttle in its orbit.
Find the period of a child's leg as it swings about the hip joint. Assume the leg is 0.39 m long and can be treated as a uniform rod, Estimate the child's walking speed
An FM radio station broadcasts electromagnetic waves at a frequency of 550 kHz. Calculate the wavelength of the waves.
Find an expression for the volume charge density ?(r) inside the ball as a function of r. Express your answer in terms of the variables Q, r, R, and appropriate constants
Calculate the ratio of the kinetic energy to the potential energy of a simple harmonic oscillator when its displacement is 1/8 its amplitude
Find the electric field inside a hollow plastic ball of radius R that has charge Q uniformly distributed on its outer surface
Calculate the number of cells in a hummingbird assuming the mass of an average cell is ten times the mass of a bacterium