Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
What minimum number of turns per unit length must the solenoid have?
A constant tangential force of 270 N applied to its edge causes the wheel to have an angular acceleration of 0.921 rad/s2. (a) What is the moment of inertia of the wheel?
Derive the expressions to find the wavelength of a particle of mass m and charge q accelerated through a potential difference V for the non-relatavistic case and relativistic case.
Arvin the Ant travels 30 cm eastward, then 25 cm northward, and finally 15 cm westward. What is Arvin's direction of displacement with respect to his original position?
A car traveling at 36.4 m/s takes 27.0 minutes to travel a certain distance according to the driver's clock in the car. How long does the trip take according to an observer at rest on Earth?
Five boxes, each having weight 100 N, are stacked up. The bottom box is the fifths from the top. What is the magnitude of the normal force upward exerted by the fourth box from the top on the third
A block of mass 2 kg is initially moving with speed 4m/sec at point A on a smooth inclined plane with andle 60 degrees to the horizontal. At point B on the plane (1m down the plane from point A), it
A runner, beginning from x=0 at t=0, accelerates at a constant rate for 7 seconds and reaches a speed of 7m/sec. The runner then decreases her speed at a rate of 2m/sec2 for 2 seconds and maintains
An object moves at a constant velocity of 11 m/s to the southwest for an inverval of 20 s. Halfway through this interval, what is the magnitude of its instantaneous velocity?
The largest transformer ever built handles a power of 1.50x109 W. This transformer is used to step down 765 kVAC to 345 kVAC. What is the rms current in the primary? What is the current in the secon
In a series RL circuit, a 1.2-kHz oscillating emf has amplitude εmax= 24 V and the current amplitude is Imax= 0.45 A. The ratio L/R is 5.0x10-3s. What is the value of the resistor?
A 182 mH inductor whose windings have a resistance of 8.20 Ω is connected across a 9 V battery with an internal resistance of 4.1 Ω. How much energy (in J) is stored in the inductor?
A 3.0-kg block is pulled along a FRICTIONLESS surface with a force of 42N. Attached to that block with a light string is another 3.0-kg block. Disregarding friction and the weight of the string, wha
A 200 gram metal block absorbs 1500 joules of heat, and its temperature changes by 150 degrees Celsius. What is the specific heat capacity of this metal?
Assuming that frictional forces may be neglected, what is the magnitude of the acceleration of the 19 kg block?
At what angle (less than 90°) with respect to this field will this particle, moving at the same speed, experience a magnetic force of magnitude 2.2F.
You cause a particle to move from point A, where the electric potential is 17.7 V, to point B, where the electric potential is -22.7 V. Calculate the change that occurs in the particle's electrostat
Asteroid 433 Eros is one of the largest near-Earth asteroids. For purposes of this problem,assume it is spherical. The value of g at its surface is 0.0060 m/ and the escape velocity is only10.1 m/s.
An astronaut weighs 275 lbs with equipment here on the surface of the earth. If he goes to a planet where the acceleration of gravity is 12.5 ft/s/s what will he weigh there? What will be his mass b
The acceleration due to gravity on the surface of Earth is g. Calling R the radius of Earth, at what distance from Earth's center would the acceleration due to gravity drop to g/16?
Suddenly the star changes size, and rotates with a new period of 14.0 days. Assuming a uniform density both before and after the size change, what is the new diameter of the star?
Question: The intensity 18m from a source of sound is measured to be 10^-4W/m^2. A) Determine the intensity of the sound in decibels
Question: What is the acceleration of a 5.0 kg object acted on by a resultant force of 35.0 N? What is the acceleration of a 2.5 slug object acted on by a resultant force of 44.0 lbs?
A 4kg cart is initially moving at 3m/s on a frictionless track. It then hits an incline and stops 2m later. (a) What is the work done on the cart? (b) If it was a 10° incline, what is the work d
A proton has 1836 times the rest mass of an electron. At what speed will an electron have the same momentum as a proton moving at 0.0016c ?