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A diathermy machine, used in physiotherapy, generates electromagnetic radiation that gives the effect of "deep heat" when absorbed in tissue. One assigned frequency for diathermy is 915.00 MHz. Determine what is the wavelength of this radiation?
A man pushes a 42 kg crate uphill along a plane inclined at 30 degree with respect to the horizontal. find the total work on the crate by dissipative forces
a wheelchair marathoner has a speed of 5 ms after rolling down a small hill in 1.5 s. if the wheelchair underwent a
A carpet is to be installed in a room of length 8.74 m and width 5.8 m. Find the area of the room retaining the proper number of significant figures
In a church choir loft, two parallel walls are 5.88 m apart. The singers stand against the north wall. The organist faces the south wall, sitting 0.619 m away from it. So that she can see the choir, a flat mirror 1.147 m wide is mounted in the south ..
venus and the sun are separated by a distance of 0.7 au. where along the path between these two celestial objects does
An engine draws energy from a hot reservoir with a temperature of 1250 K, What is the actual efficiency of this engine
Optimus Prime is flying straight up at 44 m/s when he accidentally drops his mega-ray blaster and it falls 65 m to the ground below. Calculate how long it takes for his mega-ray blaster to hit the ground.
An engineer in a locomotive sees a car stuck on the track at a railroad crossing in front of the train. When the engineer first sees the car, the locomotive is 130 m from the crossing and its speed is 17 m/s.
A ray of light in air is incident on a planar surface of silica. The refracted ray makes an angle of 27.2? with the normal. Refraction index for silica is 1.41. Calculate the angle of incidence. Answer in units of ?.
The average speed of the atoms in a 3.9 g sample of helium gas is 607 m/s. Estimate the thermal energy of the sample
a 70-kg bicyclist coasts down a hill that makes a 10degree angle with the horizontal at a speed of 10 ms.a if the drag
q1. an archer puts a 0.26 kg arrow to the bowstring. an average force of 213 n is exerted to draw the string back 1.3
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