Question 15 This question contains multiple parts. Make sure to read all the instructions and answer...
Can someone please help with these? Consider a ball of mass m attached to a spring of stiffness k, oscillating with amplitude A on a frictionless horizontal surface Part a At what displacement from equilibrium does the system have equal quantities of kinetic and potential energy? Select the correct answer O of 3 attempts used Part b At what displacement from equilibrium does the ball have half its maximum velocity? Select the correct answer 0-7시 our
Question 10 This question contains multiple parts. Make sure to read all the instructions and answer each part Part a What will happen to the period of a ball-on-a-spring if the ball is replaced by a smaller one with half the mass? Select the correct answer O Period stays the same O Period is halved Period decreases by 29% Period is doubled Your Answer Period increases by 41% CHECK ANSWER 1 of 2 attempts used LAST ATTEMPT
Question 7 This question contains multiple parts. Make sure to read all the instructions and answer each part. Consider two boxes of masses, m and 2m, both initially at rest. You push each box separately with a force, F, over a distance, d, across a frictionless surface. Part a (1 points) How does the final kinetic energy of the lighter box compare to the final kinetic energy of the larger box? CHECK 1 of 3 attempts used Saved ANSWER The...
Question 13 This question contains multiple parts. Make sure to read all the instructions and answer each part Consider a round parallel plate capacitor consisting of two circular metal plates of radius, R-1.0 cm, separated by d = 150 μm of air. The capacitor is connected to a potential source, as shown in the figure below. Part a Calculate the capacitance of this capacitor in picoFarads? (1pF 10-12 F) Part b If the potential source has a voltage of Vo...
This question contains multiple parts. Make sure to read all the instructions and answer each part Part a Why is it that a column in front of the stage in a concert hall prevents you from seeing the lead violinist, but you are still able to hear the sound waves emitted by the violin? Select the correct answer O Sound waves have much shorter wavelengths than light waves and therefore are more able to bend around the column O Sound...
Question 6 This question contains multiple parts. Make sure to read all the instructions and answer each part. Part a What is the derivative of f(x, t) = A sin (kx + wt) with respect to time (t)? Select the correct answer df = Aw sin(kx + at) A cos(kx +wt) 0 4 = Ak sin(kx + wt) 0 4 = Aw cos(kx + wt) Part b What is the second derivative of f(x,t)-A sin(ka+ ut) with respect to space...
Question 15 This question contains multiple parts. Make sure to read all the instructions and answer each part. An electron is confined in a box of length 0.10nm. Part a What is the wavelength of photons emitted when the electron transitions from an n 3 to an n-2 energy state? Enter answer here nm 1 nm Answer of 4 attempts used Part b What is the wavelength of photons emitted when the electron transitions from an n-4 to an n...
This question contains multiple parts Make sure to read all the instructions andenswer each part Part a What is a solution of the following differential equation? Select the correct answer 1 of 3 attempts used O f)-Asin(kt) Part b For the function fe)-Ae T.S,find the value of t at which the function has decressed to hait its instial value That is, tolve the following for t Enter apswer here 0 of 3 attempts used Part c f Ilogjo(a) then what...
Question 9 This question contains multiple parts. Make sure to read all the instructions and answer each part Marvin uses a long copper wire with resistivity 1.68 x 10-8Ω . m and diameter 1.00 x 10-3 m to create a solenoid that has a 3.00 cm radius. Part a Calculate the total resistance if Marvin uses 12.6 meters of wire to create the solenoid Enter answer here S2 0.222X Answer Your 1 of 10 attempts used CHECK ANSWER Part b...
Question 6 This question contains multiple parts. Make sure to read all the instructions and answer each part The figure below shows the overall acceleration vector for a particle moving clockwise in a circle of radius r = 1.25m at a certain instant in time. The magnitude of the acceleration vector is a 25.3m/s2 Image size: sML Max 30.0 (1 points) Part a At that instant, find the tangential acceleration of the particle. Please enter a numerical answer below. Accepted...