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Archaeologists often find only parts of ancient human remains. For example, they may find a small finger bone, called the metacarpal bone.
At Location One, fluid with a density of 1.21×103 kg/m3 is flowing at speed of 4.35 m/s through a circular pipe which has a radius of 7.600×10-2 m. As the fluid flows along the pipe, the
A metal block of mass 1.220 kg is hanging from a string. The tension in the string is 7.712 N. The block is submerged in a beaker of fluid and is stationary. What is the magnitude and direction of t
A spherical ball with a radius of 2.660×10-1 m is completely submerged in a fluid that has a density of 1.081×103 kg/m3. What is the volume of the fluid displaced by the ball? (Since the
When an AC source is connected across a 15.0 Ω resistor, the rms current in the resistor is 7.10 A. (a) Find the rms voltage across the resistor.
What will the Coriolis Force observed on a 600 gram basketball thrown with a horizontal speed of 5m/s? It is thrown between two children on opposite ends. By how much does it miss its mark due to t
A string of length 1.2m vibrates in 7 loops at a frequency of 70Hz. Show Work! a. What is the wavelength? b. At what speed is the string vibrating.
Suppose that the magnetic field of the Earth were due to a single current moving in a circle of radius 2910 km through the Earth's molten core. The strength of the Earth's magnetic field on the surf
The hose ends with a nozzle of diameter 2.40 cm. A rubber stopper is inserted into the nozzle. The water level in the tank is kept 7.50 m above the nozzle. (a) Calculate the friction force exerted b
A small leak occurs in one of the window seals in the passenger compartment. Model the air as an ideal fluid to find the speed of the stream of air flowing through the leak. (Assume the density of a
At what frequency does the inductive reactance of a 82.0 µH inductor equal the capacitive reactance of a 82.0 µF capacitor?
When an AC source is connected across a 15.0-Ω resistor, the rms current in the resistor is 7.10 A. (a) Find the rms voltage across the resistor.
A person who weighs 628 N is riding a 91.6 N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 7.51E+5 Pa, w
what must be the new length of the pendulum, such that the clock continues to keep accurate time (that is, its period remains the same)?
A simple pendulum is made from a 0.617 m-long string and a small ball attached to its free end. The ball is pulled to one side through a small angle and then released from rest. After the ball is re
Two long straight wires are parallel and carry current in opposite directions. The currents are 8.00 and 12.0 A and the wires are separated by 4.00 cm. What is the magnetic field in Tesla at a point
Calculate the pH of a solution that has an ammonium chloride concentration of 0.050M and an ammonia concentration of 0.045M. Explain using an ice diagram, if possible.
How large a current (in the equatorial plane) would be required to produce such a field?
A 2.5 T magnetic field passes through a circular ring of diameter 3.0 cm at an angle of 30o with the normal. Find the magnitude of the magnetic flux through the ring.
A block is made of an unknown material. When placed in water , the block floats and 4 m^3 of the block is observed to be above the surface of the water. When a seacond block with the same dimension
A point charge Q=10^-9 coulombs is placed at the centre of a dielectric sphere of radius R=10cm. The relative permittivity of the dielectric is 2. Find the volume polarization density within the die
Derive an expression for the maximum angle the string swings with respect to the vertical axis after the collision.
When a seacond block with the same dimension but 3 times the density of the first is placed in the water 2 m^3 of the block is found above the surface. Find the mass of the first and second block (m
The boat moves 25cm relative to the water as a result of you changing position in the boat. Determine the mass of your friend, if your mass is 80 kg and the mass of the boat is 30 kg. Assume that yo
Were you exceeding the 40 mph (17.87 m/s) speed limit before you applied the brakes? Was the SUV speeding before the collision?