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Find the minimum diameter of an l = 16.3 m long steel wire that will stretch no more than 7.39 mm when a mass of 343 kg is hung on the lower end
A rat with an emissivity of .40, total area of .15m^2 and a temperature of 37C. How much energy must the rat's body generate to maintain a skin surface of 37C in a 24 hour period
The model airplane in Figure 5.6 is flying at a speed of 14.5 m/s on a horizontal circle of radius 18.1 m. The mass of the plane is 0.801 kg, What is the net work done on the plane
A metal rod with a length of 22.0cm lies in the xy-plane and makes an angle of 37.9 degrees with the positive x-axis, What is the magnitude of the emf induced in the rod
Smoking causes blood vessels to constrict. If the average blood vessel radius of a smoker decreases 1.6% Calculate the needed percent increase in pressure
Calculate the flow rate in cubic centimeters per second in an aorta of radius 60 cm if the average blood velocity in it is 0.81 cm/s
Consider a balloon filled with helium gas at room temperature (T = 289 K) and atmospheric pressure. Calculate the average de Broglie wavelength of the helium atoms
A friend tells you that when he takes off his eyeglasses and holds them 18cm above a printed page, what is the focal length of your friend's glasses
Jack and Jill are standing on a crate at rest on the frictionless, horizontal surface of a frozen pond. Jack has a mass of 75.8kg, What is the final speed of the crate if both Jack and Jill jump simu
Blocks A (mass 2.00kg ) and B (mass 10.50kg ) move on a frictionless, horizontal surface. Find the maximum energy stored in the spring bumpers and the velocity of each block at that time
Determine the maximum percent uncertainty it will produce in this experiment if we did not align the apparatus to minimize its effects
An object 6.0mm high is placed 18cm from a convex mirror of radius of curvature 18cm. Determine the image distance using the mirror equation
Find the moment of inertia of the plate for an axis that lies in the plane of the plate, passes through the center of the plate, and is perpendicular to the axis in part A
A spherical ball of charge has radius R and total charge Q. The electric field strength inside the ball(r?R) is E(r)=Emax(r4/R4). Find an expression for the volume charge density ?(r) inside the ball
Suppose that you wish to mold a uniform wire from 1.50 g of copper. The wire needs to have a resistance of 0.0400 ohm's, What should be the diameter fo the wire?
a rod of length L lies along the x-axis between x=A and x=A+L. The rod has a non-uniform charge density, What is the magnitude of the electric field at the origin
An aluminum wire has a cross-sectional area of 2.70x 10^-6 m^2 and carries a current of 7.50 A. The mass density of aluminum is 2.70 g/cm^3. find the average speed of the electons in the wire. &nbs
A 4.40 kg ball is dropped from a height of 14.0m above one end of a uniform bar that pivots at its center. The bar has mass 7.50kg, How high will the other ball go after collision
the distance between the object and the eyepiece of a compound microscope is 18 cm. what is the total magnification of the microscope
The focal lengths of the objective and the eyepiece in a microscope are 0.29 and 2.5 cm. what is the distance between the objective and the eyepiece?
What is the electric potential difference between two points that are 3.00 cm and 5.00 cm from a proton
Two blocks are free to slide along the frictionless wooden track shown below. The block of mass m1 = 5.02 kg is released from the position shown, Calculate the maximum height to which m1 rises after
What is the focal length of the contact lenses that will enable him to see distant objects clearly
A man slides along a long water slide and then being launched into the air to land in a water pool. Find the magnitude of the velocity at landing