Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
On a spacecraft two engines fire for a time of 578 s. One gives the craft an acceleration in the x direction of ax = 5.33 m/s2, Calculate the magnitude of the initial velocity
You walk for 6.44 km with at a constant velocity of 2.60 m/s due west, turn around, and then walk with an average velocity of 0.405 m/s due east, During the trip, how far east did you walk
The electric potential at a position located a distance of 19.5 mm from a positive point charge of 7.70×10-9C, Calculate the value of the second charge
A steady beam of alpha particles (q = + 2e, mass m = 6.68 x 10-27 kg) traveling with constant kinetic energy 26 MeV carries a current of 0.34 µA. If the beam is directed perpendicular to a fla
In the figure a small, nonconducting ball of mass m = 1.0 mg and charge q = 1.7 x 10-8 C, calculate the surface charge density of the sheet
The speed of a particle moving in a circle 2.0 m in radius increases at the constant rate of 4.4 m/s2. what is the speed of the particle
In a Compton scattering experiment, an x-ray photon scatters through an angle of 18.0° from a free electron that is initially at rest. Calculate the angle through which the electron scatte
A device uses a Stirling cycle on 433 moles of a monatomic ideal gas between two reservoirs with temperatures of 416 K, How much energy does this device transfer into the hot reservoir
A window air conditioner uses 1392 W of electricity and has a coefficient of performance of 2.47. How much work will be done by the air conditioner during the process of cooling the room
A mini-fridge needs to maintain a temperature of 277 K. The air outside the mini-fridge has a temperature of 292 K. What is the power output (that is, the work done per second) of the compressor in th
A heat pump uses an ideal Carnot cycle to heat a house. The outside air has a temperature of 294 K, In the scenario described in the previous question, how much energy is transferred out of the outsid
A refrigerator uses an ideal Carnot cycle to cool its interior. The outside air has a temperature of 304 K, What is the coefficient of performance of this refrigerator
An engine draws energy from a hot reservoir with a temperature of 1250 K, What is the actual efficiency of this engine
Two point charges totaling 9.00 µC exert a repulsive force of 0.250 N on one another when separated by 0.537 m. What is the charge on each
You illuminate a slit of width 0.0527 mm with light of wavelength 715 nm and observe the resulting diffraction pattern on a screen that is situated 2.39 m from the slit
A patient has a near point of 45.0 cm and far point of 85.0 cm. Calculate the power lens needed to correct the patient's far point
An ice skater is gliding horizontally across the ice with an initial velocity of +7.77 m/s. How much time elapses before her velocity is reduced to +3.00 m/s
An athlete crosses a 28 m wide river by swimming perpendicular to the water current at a speed of 0.8 m/s relative to the water. What is the speed of the swimmer with respect to a friend at rest on th
The density of petrol is 730 kg/m^3 at 0 degrees C. Its average coefficient of expansion is 9.60 * 10^-4 degrees C. Assuming you have a 45 litre full tank, how many extra grams of petrol would you g
Use gauss law to find the electtic field E from a spherical +charged sphere of radius r
If an isolated conducting sphere 8.9 cm in radius has a net charge of 6.8 ?C and if V = 0 at infinity, what is the potential (in V) on the surface of the sphere
Sphere 1 with radius R1 has positive charge q. Sphere 2 with radius 8.0R1 is far from sphere 1 and initially uncharged. what fraction of qends up on sphere 1
Two large parallel metal plates are 1.4 cm apart and have charges of equal magnitude but opposite signs on their facing surfaces. what is the electric field (in V/m) in the region between the plates
Two point charges -2Q and +3Q are on the x-axis, -2Q at the origin and +3Q at x = D. Find two points on the x-axis within the vicinity of the charges where the electric potential is zero
What's the magnitude of the electric field at an on-axis point a distance of .7m from a ring of charge with a total charge of .8microC