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Assume that a drop of mercury is an isolated sphere. What is the capacitance of a drop that results when 10 drops each of radius R = 2.60 mm merge?
A parachutist relies on air resistance (mainly on her parachute) to decrease her downward velocity. She and her parachute have a mass of 55.5kg and air resistance exerts a total upward force of 650
When venturing forth on Planet X, you throw a 5.65kg rock upward at 13.4m/s and find that it returns to the same level 1.47s later What does the rock weigh on Planet X?
Assuming the refrigerator is reversible, at what rate must it consume electrical energy to maintain a constant 4 degree C interior?
A hockey puck with mass 0.160kg is at rest on the horizontal, frictionless surface of a rink. A player applies a force of 0.250N to the puck, parallel to the surface of the ice, and continues to ap
A 63.0kg skater moving initially at 2.40m/s on rough horizontal ice comes to rest uniformly in 3.41s due to friction from the ice. What force does friction exert on the skater?
You push on the chair with a force F = 38.0N that is directed at an angle of 40.0^\circ below the horizontal and the chair slides along the floor. use Newton's laws to calculate the normal force tha
A sleigh slides down a snowy incline 15° to the horizontal, with coefficient of kinetic friction µk = 0.21. (a) Find the acceleration of the sleigh as it slides down the incline. (b) If th
A marble is projected up along a 17 ° incline track at an initial speed of 2.1m/s and then coasts without friction. (a) How long does it take for the marble to come to rest momentarily? (
A 20-cm-long nichrome wire is connected across the terminals of a 1.5 V battery. a. What is the electric field inside the wire?
As a particle moves from the origin to (1i + 7j) m, it is acted upon by a force given by (2i + 6j) N. Calculate the work done by this force on the particle as it moves through the given displacement
The intrinsic magnetic dipole moment of the electron has magnitude 9.33 x 10-24 A ·m2. In other words, the electron acts as though it were a tiny current loop with NIA = 9.33 x 10-24 A ·
You have a concave spherical mirror with a 11.5-cm radius of curvature. You place an object on the mirror\'s axis, 17.7 cm in front of the mirror. How far is the object's image from the mirror?
You are given a spherical mirror and wish to determine its properties. You place an object on its axis, 39.30 cm in front of it, and discover that the mirror creates a virtual image located 13.70 cm
You place a 5.93-mm-high diamond on the axis of and 11.5 cm from a lens with focal length -5.45 cm. If it can be determined, is the diamond's image real or virtual? How high is the image (expressed
You place a 7.73-mm-high chocolate chip on the axis of and 12.7 cm from a lens with focal length 5.45 cm. If it can be determined, is the chocolate chip's image real or virtual? How high is the imag
You have a lens whose focal length is 6.63 cm. You place an object on the axis of the lens at a distance of 12.7 cm from it. How far is the object's image from the lens?
How large a radio telescope would we need to detect this signal? (Hint: Use the inverse square law for light.) Diameter = m Please answer the question in meters!!!!!!!!
A circular coil consisting of a single loop of wire has a radius of 34.1 cm and carries a current of 27.6 A. It is placed in an external magnetic field of 0.316 T. Calculate the torque on the wire w
The 23.0-kg child accelerates too, but with a smaller acceleration than that of the sled. Thus, the child moves forward relative to the ice, but slides backward relative to the sled. Find the accele
What is the acceleration of the rocket's center of mass before and after the explosion?
A 75V- generator supplies 4.1kW of power. How much current does the generator produce?
When a potential difference of 20 V is applied to a given wire, it conducts 0.35 A of current. What is the resistance of the wire?
determine: a) the coefficient of performance for this refrigerant and b) the Exergy destruction when the temperature of the surroundings is 20 degree C.
You and a close friend stand facing each other. You are as close as you can get without actually touching. If each of you is attached by a wire to a battery, you can act as the two plates in a capa