

Question 9 Correct 1.00 points out of 1.00 p Flag question A cart of mass 316...
A cart of mass 260 g is placed on a frictionless horizontal air track. A spring having a spring constant of 8.0 N/m is attached between the cart and the left end of the track. The cart is displaced 3.5 cm from its equilibrium position. (a) Find the period at which it oscillates. s (b) Find its maximum speed. m/s (c) Find its speed when it is located 2.0 cm from its equilibrium position. m/s
Question 19 Tries remaining: 4 Points out of 1.00 P Flag question The position of a 0.30-kg object attached to a spring is described by x(0.21 m) cos[(0.7n rad/s) q. (Assume tis in seconds.) X= (a) Find the amplitude of the motion. Answer: Check Question 20 Tries remaining: 4 Points out of 1.00 P Flag question (b) Find the spring constant. Answer: Check Question 21 Tries remaining 4 Points out of 1.00 P Flag question (c) Find the position of...
Question 1 Incorrect 0.00 points out of 1.00 P Flag question the origin of the coordinate system We need to calculate the centroid location with respect for the object below. X = 34 mm Х, = 58 mm X3 = 38 mm Y = 54 mm Y2 = 31 mm r = 13 mm Let's work our way through the problem one step at a time. The first step in any centroid calculation is to break the object up into...
Question 5 Tries remaining: 3 Points out of 1.00 P Flag question To measure their mass while staying in zero-g environments, astronauts use a body-mass measuring device (BMMD). This consist of them grabbing a big spring, and oscillating on it in simple harmonic motion, and measuring the period. The spring constant of the BMMD is 3100 N/m. A) If the astronaut has a period of 1.07 s, what is their mass? Answer: Check Question 6 Points out of 1.00 Tries...
Not yet answered Points out of 11.0 P Flag question A mass m=29.2 kg slides on a frictionless track with initial velocity VA=7.8 m/s at Position A with height ha=45.2 m. It passes over a lower hill with a height hg=28.9 m (at Position B) before stopping by running into a large spring with spring constant k=5106 N/m at Position C at height hc=28.5 m. The mass is brought to a stop at Position D, after compressing the spring by...
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Question 4 Not yet answered Points out of 1.00 P Flag question If the atomic radius of Copper is 0.128 nm, calculate the volume of its unit cell in cubic nanometers. Round off the answer to three significant figures. Do not include the units Answer:.047 Question 5 Not yet answered Points out of 1.00 P Flag question Beryllium (Be) has an HCP unit cell for which the ratio of the lattice parameters c/a is 1.568. If...
Question 3 0.00 points out of 1.00 Flag question Incorrect A proton initially at rest is accelerated by a uniform electric field. The proton moves 4.05 cm in 111 x 10 s. Find the voltage drop through which the proton moves. (The mass of a proton is 1.67E-27 kg) Answer: 6.26e-29v Check You did not give the correct unit. Incorrect Marks for this submission: 0.00/1.00.
(b)
Find the charge.
Question 7 Partially correct 0.s0 points out of 1.00 P Flag question A capacitor has parallel plates that have 1.10 x 106 NC. an area of 1.06 cm2 and are 1.02 mm apart. There ls a vacuum between the plates, and the electric field (a) Find the potential across the plates. 1122 (b) Find the charge. 1.0E-9 Check correct CKE, A/d, for a vacuum, x 1 and Q cv
Question 9 Not yet answered Points out of 1.00 P Flag question Consider an economy with the following production function: Y = AK L-a Let A = 2, K-1000, and L - 100 Let 0.4 What is the wage paid to labor for this economy? Round your answer to two decimals places. Answer: Answer:
Question 12 Tries remaining: 4 Points out of 1.00 p Flag question In Edgar Allen Poe's short story "The Pit and the Pendulum" includes a scene where a bladed pendulum swings over a person, slowly getting closer. A) If the pendulum has a period of 5.73 s ("Its sweep was brief, and of course slow."), how long is the pendulum? Answer: Check Question 13 Tries remaining: 4 Points out of 1.00 Flag question B) The story also claims that the...