Other Physics Answers

Point P is located on the x-axis of a coordinate plane at x = 0.2 m.
Object A of charge -5e-9 C is located on the y-axis of a coordinate plane at y = 0.2 m.
Object B of charge 2e-9 C is located on the y-axis of a coordinate plane at y = -0.4 m.
Calculate the magnitude of the net electric field at point P due to objects A and B.

358.258 N ⁄ C
417.968 N ⁄ C
656.806 N ⁄ C
477.677 N ⁄ C
597.097 N ⁄ C

Point P is located on the x-axis of a coordinate plane at x = 0.1 m.
Object A of charge 1e-9 C is located on the y-axis of a coordinate plane at y = 0.2 m.
Object B of charge 3e-9 C is located on the y-axis of a coordinate plane at y = -0.5 m.
Calculate the direction (angle with respect to the positive x-axis) of the net electric field at point P due to objects A and B.

-27.096°
-25.996°
-28.196°
-30.396°
-29.296°

Point P is located at the origin of a coordinate plane.
Object A of charge 2e-9 C is located on the x-axis of a coordinate plane at x = 0.4 m.
Object B of charge -4e-9 C is located on the y-axis of a coordinate plane at y = 0.5 m.
Calculate the direction (angle formed with the positive x-axis) of the net
electric field at point P due to objects A and B.

-46.801°
153.598°
-52.001°
127.999°
115.199°

Point P is located at the origin of a coordinate plane. Object A of charge -5e-9 C is located on the x-axis of a coordinate plane at x = 0.1 m. Object B of charge -2e-9 C is located on the y-axis of a coordinate plane at y = 0.2 m.Calculate the magnitude of the net electric field at point P due to objects A and B.

4522.444 N ⁄ C
5879.177 N ⁄ C
4070.2 N ⁄ C
2713.466 N ⁄ C
5426.933 N ⁄ C

Object A of charge -2e-9 C is located on the x-axis at x = 0.4 m. Object B of charge 1e-9 C is located on the x-axis at x = 1 m. Point P of is located on the x-axis at x = 1.1 m. Determine the magnitude and direction of the net electric field point P by objects A and B.

861.265 N ⁄ C West
864.265 N ⁄ C East
863.265 N ⁄ C East
864.265 N ⁄ C West
863.265 N ⁄ C West

Object A of charge -5e-9 C is located on the x-axis at x = 0.5 m. Point P is located on the x-axis at x = 0.6m. Object B of charge 1e-9 C is located on the x-axis at x = 1.1 m. Determine the magnitude and direction of the net electric field at point P due to objects A and B.

4989.6 N ⁄ C West
4536 N ⁄ C West
5443.2 N ⁄ C West
4536 N ⁄ C East
4989.6 N ⁄ C East

6.) A meter stick of uniform density is balanced horizontally on a fulcrum with support at its center of mass (i.e. the 50 cm mark). A weight is hung at the 35 cm mark and the meterstick begins to rotate with an angular acceleration of 0.20 rad/s^2. Given that the moment of inertia of the meterstick is (1/12)*M*L^2 and the mass M of the meter stick is 0.12 kg A) What is the torque on the meter stick?
B.) What is the amount of weight hung at the 35 cm mark?
C.) Does the torque increase, decrease or remain constant as the meter stick begins to rotate?

Three boxes of equal dimensions (20 cm x 30cm x 50 cm), containing material which density 6.8x10-2 g/cm3 are to be stored for winter. What is the least amount of pressure that can be exerted by the blocks?
a) 1999.2 g/cm.s2
b) 40 Pa
c) 666 Pa
d) 4000 g/cm.s2
e) 333 Pa

By using the principle of conservation of energy, show that the velocity of the object when passing through is given by v=[2gh-3/2hg]^1/2

Obtain the Fourier cosine series for the following function:


F(x)= 1 for (0 less than equal to x< 1)

0 for (1 less than equal to x < 4 )

Solve the heat conduction equation:
for the following boundary and initial conditions:
8(d^2u/dt^2)=(du/dt), for 0<X< 5 and t> 0,
u(0,t) = u(5,t) = 0,
u(x,0) =2sin(πx)− 4sin(2πx)

Derive the relationship between loudness and intensity of sound