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Calculate the tension T in the rope if the gymnast climbs the rope at a constant rate. Express your answer in newtons.
Charge A and charge B are 3.20 m apart, and charge A is +3.50 C and charge B is +4.10 C. Charge C is located between them at a certain point and the force on charge C is zero. How far from charge A
What recoil velocity does she acquire in response to a single shot from a stationary position, assuming that no external force keeps her in place?
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 75-kg man just befo
A 1950-kg car experiences a combined force of air resistance and friction that has the same magnitude whether the car goes up or down a hill at 31 m/s. Going up a hill, the car's engine produces 52
Calculate the pressure which must be applied to tin in order to decrease its white to gray transition temperature by 10 Celsius.
If a batch formula for 2130 kg of window glass consists of 500 k of CaCO3, 1150 k SiO2, and an unknown amount of Na2CO3. Calculate the amount of Na2CO3.
1040 Carbon Steel is a medium carbon steel. Determine the applied stress at failure for a crack the length of 5 mm using the following equation with Y = 1.
Assume a construction worker bangs his hammer, on average, 1100 times a day. How many stress cycles would this produce in a year? And how many in 5 years? Please show your work so i can compare it t
An accidental spark ignites the explosive, and the car breaks into two pieces, which then roll away along the same track. If one piece has a mass of 1.9 x 104 kg and a final speed of 2.0 m/s toward t
Two large parallel non-conducting sheets are spaced d = 2.80 cm apart and have a potential difference of magnitude 500 V. An electron is thrown directly away from one sheet, and is stopped just bef
What are (a) the work done by the rope's force, (b) the increase in thermal energy of the block-floor system, and (c) the coefficient of kinetic friction between the block and floor
A series of object are being rotated. The same net torque is being applied to each object. Rank the object in order of the resultant angular acceleration (1=lowest).
A person who weighs 641 N is riding a 94.0 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 7.50E+5 Pa, w
An airtight box has a removable lid of area 1.34E-2 m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 8.34E+4 Pa. The inside of the box is completely
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 2.89E+28 kg and 1.08E+3 m. Calculate the density of such a star.
Light of wavelength 600 nm in air goes into a medium where the index of refraction is 1.73. What is the frequency of this light in the medium?
The human body normally produces about 2 X 10^6 red blood cells per second. A. Use scientific notation to express how many red blood cells your body produces in one day.
To increase the rate at which objects can be separated from solution, it is useful to make the centrifuge's speed as large as possible. If you want to design a centrifuge of diameter 1.6 m to have a
What is the net average force (magnitude and direction) that acts on her when she is in the water?
There is a uniform magnetic field present, given by B=0.003 i + 0.004 j + 0.002 k, where i,j,k are the unit vectors along the cartesian coordinate axes in units of Tesla. Calculate the y-component o
A 1.10m long straight wire has a resistance R = 14.0 Ohm and is connected to a 3.00V battery. The wire is located in a uniform magnetic field B directed perpendicular to the wire. Calculate the mag
A light ray strikes this material (from air) at an angle of 34.3° with respect to the normal of the surface. Calculate the angle of the reflected ray (in degrees).
Assume the barrel is initially at rest and that its moment of inertia can be approximated as a hollow cylinder rotating about its axis: Icylinder=MR2. Your answer should be given to a tenth of a m/s