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A glass window 0.45cm thick measures 90cm by 35cm . If the inside and outside temperatures differ by 18?, By what factor is the rate of heat transfer reduced
The tangential speed of a particle on a rotating wheel is 3.5m/s. how long will the particle take to make one revolution
The vapor pressure of water at 45.0 degrees celcius is 71.93 mmHg. Calculate the vapor pressure of a solution of 1.50m K2CO3 at this temperature
A 89.3-kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.53 rad/s. Find the angular velocity of the platform with its load
The reaction is first-order in N2O5, with the specific rate constant 6.08 x 10-4/s. Calculate the reaction rate at these conditions. a. [N2O5] = 0.200 mol/L b. [N2O5] = 0.319 mol/L
You measure the length of a distant car to be subtended by an angular distance of 1.0 degrees. approximately how far away is the car
A vertical spring has one end attached to the ceiling and a 2.50 kg weight attached to the other one. find how fast the weight is moving
Compute the wavefunction and the probability to tunnel, for a proton in the potential: V(x)=0, when x< -0.20 nm, and x>0.00 nm, and V(x)=2.0*10-19 J otherwise.
A description of a land feature anywhere on Earth that has been sculpted by physical and chemical weathering processes and description of the particular processes that changed your chosen land feature
A diffraction grating 22.0mm wide has 6000 rulings. Light of wavelength 592nm is incident perpendicular on the grating. What is the largest value of theta at which maxima appear on a distant viewing s
A mixture containing only BaSO4 and CaSO4 contains one-half as much Ba2+ as Ca2+ by weight. What is the percentage of CaSO4 in the mixture
A train has a mass of 5.22 ? 106 kg and is moving at 79.0 km/h. The engineer applies the brakes, What is the final speed of the train
An object of mass 1.9 kg starts from rest and slides down an inclined plane 80 cm long in 0.46 s
A 2000 kg car is slowed down uniformly from 23.0 m/s to 5.00 m/s in 4.40 s. What average total force acted on the car during that time
Calculate whether or not the given point is a solution to the system and write the system in non-matrix form
A 5.1 kg bucket of water is raised from a well by a rope. find the force exerted by the rope on the bucket.
How long does it take the Sun to melt a block of ice at 0?C with a flat horizontal area 1.0 m2 and thickness 1.3cm
A 2.00kg block is pushed against a 400N/m spring, compressing it 22.0 cm. When the block is released, find the speed of the block just after leaving the spring
A 4.15 g lead bullet traveling at 316 m/s is stopped by a large tree. what is the increase in temperature of the bullet
A 5 kg ball is dropped and hits the ground with a velocity of 14 m/s. using the law of conservation of energy, what height was it dropped from
Gas is confined in a tank at a pressure of 9 atm and a temperature of 15 degrees C. what is the new pressure in the tank
A 27.0 g copper ring at 0°C has an inner diameter of D = 3.04591 cm. A hollow aluminum sphere at 87.0°C has a diameter of d = 3.05180 cm. What is the mass of the sphere
If an airplane has airspeed 100 km/hr southwest but is traveling 140 km/hr south relative to the ground
A 1.5kg ball and a 3.0kg ball are connected by a 3.0m long rigid, massless rod. What torque will bring the balls to a halt
What is the approximate value of the phase angle and draw a phasor diagram