Physics question and answers for August 25, 2023
- Q In the homework, you were asked to calculate the minimum heightneeded for a roller coaster car to just barely make a circularloop-the-loop. Instead, suppose a roller coaster designer wants theriders...
- Q 1.The terms H II and H2 are both pronounced “H two.†What is thedifference in meaning of those two terms? Can there be such a thingas H III?2. Why do...
- Q A car accelerates uniformly from rest and reaches a speed of22.0 m/s in 9.00 s. If the diameter of the tire is 58.0 cm, find(a) the number of revolutions the...
- Q Q: In an elastic collision between two bodies of equal mass,with body 2 initially at rest, body 1 moves off at angle θ relativeto the direction of its initial velocity...
- Q 2. A rigid disk with radius 2 m is spinning at an angular speedof 8 1/s (or 8 rad/s). A constant angular acceleration is appliedthat slows downthe disk at a...
- Q Cart 1 amd 2 are now moving toward each other when they collideand stick together. Cart 1 has a mass of 500g (.5kg) and istravelling at a speed of 0.30m/s...
- Q We assumed that the spring is ideal. In reality, as you stretchand compress the spring, frictional forces of the spring come intoplay. Explain how the frictional forces of the spring...
- Q As a quarterback throws the football, it leaves his hand at aheight of h and at an initial speed of v0 at an angle θ above thehorizontal. The receiver can’t...
- Q A small loop of copper wire is inside and held perpindicular toa large, uniform magnetic field. You move the loop in circles andvary the speed. What do you observe?a. The...
- Q Explain why the sine and logarithm of 1 meter are notwell-defined.
- Q Howdo I create an experiment to:1. Confirm that there are two types of charge2. Develop a method to test Coulomb’s law3. Explore the three main methods for charging objects
- Q Consider an ideal massless rubber-band which has an upstretched‘l’. A roll of 50 pennies of total mass mpis attached tothe rubber band. The new stretched length of the rubber band...
- Q A small solid sphere of mass M0, of radiusR0, and of uniform density Ï0 is placed in alarge bowl containing water. It floats and the level of the waterin the...
- Q A transmission wire oriented parallel to the x-axis carries acurrent of 200 A flowing along the +x direction. A secondtransmission wire also oriented parallel to the x-axis but lying ata...
- Q 9.) The 17 kg shopping cart carries a 73 kg child. The shoppingcart wheel base b = 480 mm and its vertical CG is symmetricallylocated 580 mm above the floor...
- Q #5.Which experiment that we did do you think was the most proneto random error, and which do you think was most prone tosystematic error? Why was that the case for...
- Q Besides the gravitational force, a 2.50-kg object is subjectedto one other constant force. The object starts from rest and in1.20 s experiences a displacement of (5.40î − 3.30ĵ) m, where...
- Q 1a. What would be the effect on your calculations of specificheat of the metal if there was heat lost while transferring themetal? Explain why. 1b. What would be the effect...
- Q Explain why lasers can be used to perform surgery and cutthrough metal while incandescent light cannot.
- Q a. Compute the energy of a photon with incident energy 200 kevscattered at 90°in a Compton event.b. Compute the energy of the backscattered photon from a 400 kevincidentphoton.c. Compute the...
- Q Internal Resistance of a battery labI'm doing this lab where we have to find the internal resistanceof a charged and uncharged battery. We got our data by plotting a Vvs...
- Q QUESTION 1Engineers wish to launch a satellite from the surface of theMoon. What is the minimum speed the satellite must have to escapethe Moon’s gravity – that is, what is...
- Q As observed on earth, a certain type of bacteria is known todouble in number every 24 hours. Two cultures of these bacteria areprepared, each consisting initially of one bacterium. One...
- Q (a) What is the magnitude of the tangential acceleration of abug on the rim of a 12.0-in.-diameter disk if the disk acceleratesuniformly from rest to an angular speed of 80.0...
- Q A bicycle tire is spinning counterclockwise at 3.10 rad/s.During a time period Δt = 2.40 s, the tire is stopped andspun in the opposite (clockwise) direction, also at 3.10 rad/s.Calculate...
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