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A total pressure probe like the one shown in Video V3.8 is inserted into a supersonic airflow. A shock wave forms just upstream of the impact hole. The probe measures a total pressure of 500 kPa(abs). The stagnation temperature at the probe head is 500 K. The static pressure upstream of the shock is measured with a wall tap to be 100 kPa(abs). From these data, estimate the Mach number and velocity of the flow.
question a radio wave sent from the surface of the earth reflects from the surface of the moon and returns to the
A 2.50 Amp current flows through the leads of an electric appliance. How long does it take for 7.50 C to pass through
A simple pendulum consists of a small object of mass 3.0 kilogram hanging at the end of 2.0 meter long light string that is connected to a pivot point. Obtain the magnitude of the torque (due to the force of gravity) about this pivot point
What is the net force acting on an object with a mass of 10 kilograms, falling at a constant downward velocity of 15 meters per second (15 m/s)?
The speed of a bobsled is increasing because it has an accelerationof 2.4m/s^2. At a given instant in time, the forces resistingthe motion, including kinetic friction and air resistance, total450 N.
A rifle with a weight of 25 N fires a 6.0 g bullet with a speed of 260 m/s, Find the recoil speed of the rifle
Point charges of 72 Q are placed at each corner of an equilateral triangle, which has sides of length 8 L. What is the magnitude of the electric field at the mid-point of any of the three sides of the triangle in units of kQ/L2?
A novice skier, starting from rest, slides down a frictionless 13degree incline whos vertical height is 125m. how fast is she going when she reaches the bottom
An oil film floats on a water surface. The indices of refraction for the air, water, and oil respectively are 1.000, 1.333, and 1.466. What is the angle of the refracted ray at the oil to water surface
A thin rod of mass m = 0.15 kg and length L = 1.2 m is held vertically with one end on the floor and is then allowed to fall. What is the total kinetic energy of the rod when it hits the floor, assuming that the end on the floor does not slip
The intensity (in W/m2) of one sound is 5.46 times as great as the intensity of another sound. Relative to the quieter sound, what is the intensity level ? of the louder sound?
Four point charges, each having a charge with a magnitude of 2.00 uC, are at the corners of a square whose sides are 4.00 m long. Find the electrostatic potential energy of this system
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