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find the magnitude and direction of the resultant by adding the following forces using component method 12.0lb at 30° above the x-axis 15.0lb wt 140° and 8.0lb at 79° s of w represent the given vector
The range of human hearing extends from approximately 20 Hz to 20,000 Hz. Find the wavelengths of these extremes at a temperature of 27°C
two parallels wires, wire P and Q which carries a current of 30A and 50A, respectively in the same direction.The wires are placed 1.25 mm apart in a vacuum.
a) Calculate the magnetic force per unit length on wire P.
b) Determine the position x from wire P in between the wires where the magnetic field is zero.
. A charge of 20 x 10−6 C is 20 cm from another charge of 20 x 60−6 C
a. Find the force between them.
b. Determine the 𝐸𝑝 midway between them.
c. How much force will be experienced by an electron placed midway between them?
Draw a free body diagram of the following situations and label the forces present.
1. A 2N eraser pushed against the wall.
2. A 540 N man sitting a chair.
3. A 30 N crate moving to the east with a constant speed in frictionless surface.
4. A 5N block sliding at a rough surface inclined at an angle of 18° with the horizontal surface.
during a 10 minute period, a weigth lifter lifts a 30 kg dumbbell 50 times, from the floor level to a height of 1.75 meters. what is the average power ( in horse power) done by the weight lifter
The relative permittivity of a dielectric is 2.25
A) what is its permittivity?
B) what will be the capacitance if this inserted into a 7.8 uF air capacitor
A ball is thrown with an initial velocity of 36 m/s at 33°.
What is the initial velocity of the ball at x ang y-dimension?
What is the final velocity of the ball at x and y- dimension?
What is the time of the ball as it reaches its peak?
What is the maximum height reached of the ball?
What is the total time travel of the ball?
What makes a material a better conductor than another material?
A conducting cylinder of radius 3.25 cm and length 5.6 cm has a total charge of 5.5 x 10^-9 C distributed uniformly on its surface area. Find for the potential at its surface.
