| Question | Subject | Tutorials |
|---|---|---|
| When is the emf first one-fourth of its maximum Question: Suppose the emf generated by a coil rotating in a magnetic field is zero at t=0 and increases to its first peak at to=0.11 ms.
When is the emf first one-fourth of its maximum, in seconds? … |
Physics / General Physics | Get it Now |
| What is the fractional decrease in amplitude per cycle A 0.840-kg block oscillates on the end of a spring whose spring constant is k= 42.0 N/m . The mass moves in a fluid which offers a resistive force F=-bv, where b = 0.640 N*s/m. What is the fractional … |
Physics / General Physics | Get it Now |
| What is the balmer formula Question: A 0.969eV photon is emitted from a hydrogen atom.
Part A: What is the Balmer formula n value corresponding to this emission?
Part B: What is the Balmer formula m value corresponding to … |
Physics / General Physics | Get it Now |
| Is the momentum of the system conserved Problem 1. Two objects are arranged on a level, frictionless table as shown. Two experiments are conducted in which object A is launched toward the stationary block B. The initial speed of object A is … |
Physics / General Physics | Get it Now |
| Determine what the drag force on the runner during the race Solve the all parts of given problem:
Problem: Running on a treadmill is slightly easier than running outside because there is no drag force to work against. Suppose a 60 kg runner completes a 5.0 … |
Physics / General Physics | Get it Now |
| What is the radius of the bigger loop
1.The magnetic field at the center of a 0.60-cm-diameter loop is 2.6mT .
What is the current in the loop?
_________A
A long straight wire carries the same current you found in part … |
Physics / General Physics | Get it Now |
| Calculate for the magnitude of the velocity of the student
A student standing on a stationary skateboard tosses a textbook with a mass of mb = 1.25 kg to a friend standing in front of him. The student and the skateboard have a combined mass of mc = … |
Physics / General Physics | Get it Now |
| Part a determine the footballs initial horizontal velocity
A punted football is observed to have velocity components vhorizontal = 17 m/s to the right and vvertical = 2.5 m/s directed downward at a height h = 1.8 m above the ground. Use a Cartesian … |
Physics / General Physics | Get it Now |
| How much work does the battery perform in one minute
Question: How much work W does the battery connected to the 21.0-ohm resistor perform in one minute? The voltage of the battery is 12.0 V and the internal resistance ofthe battery is 3.00 oh … |
Physics / General Physics | Get it Now |
| What is the speed at the instant the beads collide Question: Two 2.0-mm diameter beads, C and D, are 12mm mm apart, measured between their centers. Bead C has mass 1.0 g and charge 2.5nC nC . Bead D has mass 1.7g g and charge -1.0 nC. If the beads are … |
Physics / General Physics | Get it Now |
| A bicycle and rider with mass m rolls down a hill A bicycle and rider with mass m rolls down a hill at constant velocity under the influence of gravity with negligible rolling resistance. The hill makes an angle of θ = 19 degrees with respect t … |
Physics / General Physics | Get it Now |
| The leg muscles of a person in the act of sitting down Discuss whether any work is being done by each of the following agents and, if so, whether the work is positive or negative: (a) a chicken scratching the ground, (b) a person studying, (c) a crane lif … |
Physics / General Physics | Get it Now |
| What impulse was delivered to the sled Question: A sled and rider, gliding over horizontal, frictionless ice at 5.8 m/s, have a combined mass of 86 kg. The sled then slides over a rough spot in the ice, slowing down to 3.0 m/s. What impuls … |
Physics / General Physics | Get it Now |
| A student exchanges the stock headphones b1 89 db for her
A student exchanges the stock headphones (B1 = 89 dB) for her mp3 player for a new set that is louder (B2 = 94.5dB). If the first set produced a power of P = 0.5 W, how much power does the n … |
Physics / General Physics | Get it Now |
| Find the least number of turns that the winding must have
An air-filled toroidal solenoid has a mean radius of 15.1cm and a cross-sectional area of 4.95cm2 (see the figure). The current flowing through it is 12.5A , and it is desired that the energ … |
Physics / General Physics | Get it Now |
| What is the thickness of the thin film of diamond
A layer of synthetic diamond is grown on a quartz substrate inside a vacuum chamber. The refractive indices of the substrate and the diamond layer are ns = 1.54 and nd = 2.42, respectively. … |
Physics / General Physics | Get it Now |
| What is her centripetal acceleration during the turn
Question: A typical running track is an oval with 74-m-diameter half circles at each end. A runner going once around the track covers a distance of 400m. Suppose a runner, moving at a consta … |
Physics / General Physics | Get it Now |
| What is the gravitational force sphere exerts on ring-shaped
An object in the shape of a thin ring has radius a and mass M. A uniform sphere with mass m and radius Ris placed with its center at a distance x to the right of the center of the ring, alon … |
Physics / General Physics | Get it Now |
| Which force exerts a torque about the hinge ab
The 20.0cm by 35.0cm rectangular circuit shown in the figure (Figure 1) is hinged along side ab. It carries a clockwise I = 4.90A current and is located in a uniform 1.00T magnetic field ori … |
Physics / General Physics | Get it Now |
| How much power does it require while operating
Solve the given question:
Question: A certain brand of freezer is advertised to use 880 kWh of energy per year.
Part A: Assuming the freezer operates for 6 hours each day, how much pow … |
Physics / General Physics | Get it Now |
Consultant
Online