A small 7 g plastic ball is suspended by a 22.4 cm long string in a uniform electric field 1140 N/C as shown. The ball is in equilibrium when the string makes a 26◦ angle with the vertical. A) What is the net charge q on the ball? The acceleration due to gravity is 9.8 m/s2 . Answer in units...
A small 8.26 g plastic ball is suspended by a 16.5 cm long string at an angle of 21.2 ◦ in a uniform electric field of 1320 N/C. If the ball is in equilibrium when the string makes a 21.2 ◦ angle with the vertical, what is the net charge on the ball? The acceleration due to gravity is 9.8...
Rearrange the following equations for the selected variable for for for Is it possible for velocity to be constant while acceleration is not zero? Explain your answer. An object that you throw straight up, will fall back to you at some later time. (a) Why is the object’s velocity the same at the initial and final positions? (b) Why is it...
(Metal-Casting Processes) (Groups) 10.47 A round casting is 0.2 m in diameter and 0.75 m in length. Another casting of the same metal is elliptical in cross-section, with a major-to-minor axis ratio of 2, and has the same length and cross-sectional area as the round casting. Both pieces are cast under the same conditions. What is the difference in the...
There is a cube of mass m with a v_0 of 0 at the highest point of a plane is inclined. This inclined plane has an angle of θ = 24° with respect to the horizontal and a height of 4.7 m. Once it is released, it is moving with a v=0.55 m/s at a distance d after the end...
P2. Starting with an initial speed of 5.00 m/s at a height of 0.300 m, a 1.50-kg ball swings downward and strikes a 4.50-kg ball that is released from rest at a height of 0.100 m, as the (not to scale) drawing shows. The ball-release timing mechanism is calibrated so that they meet at the bottom of their respective swings,...
Homework for MO3.2 < 8 of 17 Multiple Choice Question 16.1. A Review Part A 0.2 ft Gear A is in mesh with gear B as shown. If A starts from rest and has a constant angular acceleration of A = 2 rad/?. determine the time needed for B to attain an angular velocity of WB = 50 rad/s. B...
(13%) Problem 6: Two large rectangular sheets of charge of side L 2.0 m are separated by a distance d-0.065 m. The left and right sheets have surface charge densities of 7.9 /m2 and-4.4 μC/m2, respectively. A proton is released from just above the left plate Randomized Variables d-0.065 m te Otheexpertta.com > X 50% Part (a) What is the...
A circular coil of radius 5 cm has 50 turns of wire. The uniform magnetic field directed into the page/screen (see the figure below) is linearly increased in magnitude form 0 to 0.8 T. What time interval for this increase is needed to induce in the coil emf = 0.25 V? What is the direction of the induced emf (clockwise/conterclockwise)?...
1a. Identify which will be hotter (have a higher final temperature) if you heat equal masses of water and aluminum, each starting at room temperature with 1.0 kJ of electrical energy. Explain your groups answer. 1b. You are holding an Al rod in one hand and an Fe rod in another. The rods have the same mass and temperature (273...