Energy supplied to the rotational energy
A 1.2-kg 10-cm-diameter solid sphere is rotating about its diameter at 69 rev/min.
(a) What is its kinetic energy?
(b) If an additional 5.0 mJ of energy are supplied to the rotational energy, what is the new angular speed of the ball?
Expected delivery within 24 Hours
What is the distance of a sample of blood from the rotation axis of a centrifuge rotating at 3500 rpm, if it has an acceleration of 2000g?
A projectile is launched with an initial speed of 40 m/s at an angle of 20° above the horizontal. The projectile lands on a hillside 3 s later. Neglect air friction. (a) What is the projectile's velocity at the highest point of its trajectory?
Use Ampere's law to find the magnitude of the magnetic field at a distance ofr = 0.94 m from the wires when the currents are (a) in the same direction and (b) in opposite directions.
Find the angle for total internal reflection when light starts in water and reflects off air.
The needle has a magnetic moment of 0.700 mJ/T. What is the needle's rotational inertia about its (vertical) axis of rotation?
A 0.39-kg object connected to a light spring with a force constant of 20.2 N/m oscillates on a frictionless horizontal surface. The spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the object.
A 145 mass attached to a horizontal spring oscillates at a frequency of 4.00 . At , the mass is at = 4.40 and has 20.0 . The period is .25 seconds and the angular frequency is 25.133 rad/seconds. Determine the amplitude and the phase constant.
A proton is fired perpendicular to these plates, starting at the middle of the negative plate and going toward the positive plate. How much work has the electric field done on this proton by the time it reaches the positive plate?
On the screen, the red light with a wavelength of 688 nm is separated from the violet light with a wavelength of 391 nm by 6.60 mm. What is the separation of the two slits?
A bartender slides a beer mug at 1.9 m/s towards a customer at the end of a frictionless bar that is 1.1 m tall. The customer makes a grab for the mug and misses, and the mug sails off the end of the bar what is the speed of he mug at impact?
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!