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Q1. If a steel old fashion clock is accurate at 20 Celsius (2 s per oscillation), what is the period of the clock in the summer (35 Celsius)? Q2. How long does it take to heat 200mL water from 0 Celsius to 50 Celsius? Water density is 1kg/L and the power of microwave is 600W. Suppose the efficiency of the microwave is100%. I need you to show the work for each step and write a short comment for for on each step expalaining what you did.
An elevator is moving up at a constant velocity of 2.5 m/s Calculate the force the floor exerts on the passenger, Calculate the force the floor exerts on the passenger
A typical wall outlet voltage is 120 volts in the United States. calculate the number of turns on the secondary coil of the adapter transformer
What is the momentum in kg m/s of a proton of mass 1.67 x 10-27 kg moves with a speed of 0.9c
An ac generator supplies 20 A at 440 V to a 10,000 V power line. If the step up transformer has 150 turns in its primary coil, how many turns are in the secondary coil?
In order to reduce the deflection of the I-beam cantilever shown (Figure), a support is to be added at S. What vertical force at S is needed to reduce the deflection at this point to zero?
A cart of mass 6.8 kg is moving with a velocity of 15.2 m/s. It makes a head-on perfectly inelastic collision with a stationary cart B with mass 6.4 kg causing them to travel with the velocity 7.63 m/s. What is the velocity of cart B.
Spaceman Spiff sits just outside the Milky Way galaxy with a cup of liquid Helium which is at approximately 4K (-269 degrees C). what is the latent heat of vaporization of liquid Helium
An electromagnetic wave with frequency 56.0 Hz travels in an insulating magnetic material that has dielectric constant 3.72, What is the speed of propagation of the wave
An object 6 cm high is placed 30 cm from a concave mirror of focal length 10 cm, Calculate size of image
A rectangular loop of wire with sides 0.219 and 0.531 m lies ina plane perpendicular to a constant magnetic field (see parta of the drawing). The magnetic field has a magnitude of0.765 T and is directed parallel to the normal of the loop's surface..
The velocity vs. time curve of an object is an increasing straight line. What is the acceleration of the object
The wheel of a bicycle have an angular velocity of +20.0 rad/s. Then, the brakes are applied. In coming to rest, each wheel makes an angular displacement of +15.92 revolutions.
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