A motorist suddenly notices a stalled car and slams on the brakes, decelerating at the rate of 6.3 . Unfortunately this isn't good enough, and a collision ensues. From the damage sustained, police estimate that the car was moving at 18 at the time of the collision. They also measure skid...
A source of emitting sound of 616hz is bloked on block 'A' which is attached to the free end of string. The detector fixed on block 'B' attached to free end of spring Sb detects the sound .The blocks A and B are simultaneously displaced towards each other through distance of...
a horizontal circular wire loop of radius lies in a plane perpendicular to a uniform magnetic field pointing from above into the plane of the loop, has a magnitudr of. if in the wire is reshaped from a circle into a square, but remains in the same plane, the current in the loop during the...
Two air carts of mass = 0.80 and = 0.44 are placed on a frictionless track. Cart 1 is at rest initially, and has a spring bumper with a force constant of 690 . Cart 2 has a flat metal surface for a bumper, and moves toward the bumper of the stationary cart with an initial speed = 0.62 ....
A wire carries a current of 9.8 A in a direction that make an angle of 32.4 with the direction of the magnetic field of strength 0.262 T. Find the magnetic force on a 5.4 m length of the wire. Answer in units of N.
Make an estimate of the bound current flowing round either magnet if the equilibrium height between the magnet is 4 cm, the mass of each magnet is 2g, and their radius is 2cm. Calculate also the magnetic moment for either magnet which equal to I* R^2.
A more realistic model of such a magnet can be derived by assuming a constant magnetization throughout M=kz. where k is constant and z is the main axis. This will produce bound currents on the two surface of equal size but opposite direction to one another. there will be no bound volume...
2. One electron collides elastically with a second electron initially at rest. After the collision, the radii of their trajectories are 1.00 cm and 2.40 cm. the trajectories are perpendicular to a uniform magnetic field of magnitude 0.044 T. Determine the energy (in keV) of the incident electron
A particle leaves the origin with an initial velocity = (5.06) m/s and a constant acceleration = ( - 4.91 - 1.94) m/s2. When the particle reaches its maximum x coordinate, what are (a) its velocity, (b) its position vector?
Suppose the traffic light is hung so that the tensions T1 and T2 are both equal to 72 N. Find the new angles they make with respect to the x-axis. (By symmetry, these angles will be the same.)
Ask a new Physics Question
Tips for asking Questions
- Provide any and all relevant background materials. Attach files if necessary to ensure your tutor has all necessary information to answer your question as completely as possible
- Set a compelling price: While our Tutors are eager to answer your questions, giving them a compelling price incentive speeds up the process by avoiding any unnecessary price negotiations
1. Can you show me step by step how to solve this problem?:
- The Earth’s rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2000 the Earth takes about 0.548 s longer to complete 365 revolutions than it did in the year 1900.
- (a) What is the average angular acceleration of the Earth?
- (b) If this average acceleration remains constant, in what year will the Earths rotation come to rest?
2. I do not understand this Ideal Gas Law and Kinetic Theory question. Can you help me set it up?
- A spherical balloon is made from a material whose mass is 3.00-kg. The thickness of the material is negligible compared to the 1.5-m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305-degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19-kg/m^3. Find the absolute pressure of the helium gas