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The function x = (3.8 m) cos[(3? rad/s)t + ?/4 rad] gives the simple harmonic motion of a body. At t = 3.7 s, what are the (a) displacement, (b) velocity, (c) acceleration, and (d) phase of the motion? Also, what are the (e) frequency (in Hz) and (f) period of the motion?
q1. over a 30-day period a power plant generates an average of 751 mw of electrical power and 1225 mw of waste heat and
A conductor with cross-sectional area 6 cm^2 carries a current of 15 A. what is the drift velocity of the electrons
a 150 N sled is pulled up a 28 degree slope at a constant speed by a force of 100 N. What is the coefficient of kinetic friction between sled and slope
A simple pendulum has a length of 0.80 m and a bob of mass 0.20 kg. It is initially displaced to an angle of 18 degrees from the vertical, What angle does it make with the vertical
Four gram-moles of an ideal monatomic gas initially at temperature 300 K is compressed adiabatically from a volume of 1200 cm3 to a volume of 350 cm3. How much heat was transferred to the gas
A uniform electric field with a magnitude of 6*10^6 N/C is applied to a cube of edge length 0.1 m. what is the electric flux passing through the shaded face of the cube
A 69N box of clothes is pulled 8.9 m up a 30° ramp by a force of 100 N that points along the ramp. If the coefficient of kinetic friction between the box and ramp is 0.22, compute the change in the box's kinetic energy.
In a certain compound microscope, the object is 9.0 mm from the objective. What overall magnification is produced
A 6.50?Fcapacitor that is initially uncharged is connected in series with a 4500resistor and a 505 V emf source with negligible internal resistance. A long time after the circuit is completed (after many time constants), what are the values of the ..
a curve in a road has a banking angle calculated and posted for 80km/h The road is covered with ice so you drive slower than this limit What may happen to your car
The specific heat of a 98 g block of material is to be determined. The block is placed in a 25 g copper calorimeter that also holds 60 g of water. Determine the specific heat of the block
The other end is attaced to a 3 kg disk moving in uniform circular motion on the table, which stretches the spring by 1 cm. Note: Friction is negligibe. Illustrate what is the work done on the disk by the spring during one full circle?
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