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You may solve this problem using either tabulated values from the tables or constant specific heats. Air in enters a hair dryer at 25oC and exits at 47oC. The mass flow rate of the air is 0.0348 kg/s. The exit diameter is 4cm.
a. Calculate the exit velocity (m/s).
b. Calculate the rate of heat addition (kW)
define the potential difference between the plates.With what force must the player push the puck so that his force just equals the frictional force.
A 0.105-kg ball is dropped from rest. If magnitude of the ball's momentum is 0.790 kg · m/s just before it lands on the ground, from what height was it dropped.
A 0.200-kg block along a horizontal track has a speed of 1.40 m/s, What is the spring's maximum compression if the track is frictionless
13 cars in a circle at a boom box competition produce a 110 dB sound level at the center of the circle. What is the average sound level produced there by each
A flat coil enclosing an area of 0.10 m2 is rotating at 65 rev/s, what is the maximum voltage induced in the coil
Consider two masses, mp and mt, on a surface where friction is negligible. Write the expression for conservation of momentum in the x- and y-directions
A whale swims due east for a distance of 1.5 km, turns around and goes due west for 5.7 km, and finally turns around again and heads 4.5 km due east. (a) What is the total distance traveled by the whale? km (b) What are the magnitude and direction..
Two diffraction patterns are formed on the screen. What is the distance between the common center of the diffraction patterns and the first occurrence of the spot where the dark fringe from one pattern falls on top of a dark fringe from the other p..
A 2.54 kg particle moving along the x-axis experiences the force shown, where Fmax=6.85 N, Fmin=-6.85 N, d1=1.27 m, d2=2.54 m, d3=3.81 m, and d4=5.08 m. At x=0.00 m the particle's velocity is 3.93 m/s. What is its velocity at x=2.54 m?
In a laboratory experiment, one end of a horizontal string is tied to a support while the other end passes over a frictionless pulley and is tied to a 1.9kg sphere, What is the diameter of the sphere
two 1.3kg masses are 1.2m apart (center to center) on a frictionless table. Each has + 9.2?Cof charge, What is the magnitude of the electric force on one of the masses
What minimum force must be applied to the crate perpendicular to the incline to prevent crate from sliding down the incline.
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