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It is 155 cm from your eyes to your toes. You're standing 198 cm in front of a tall mirror. How far is it from your eyes to the image of your toes?
The current in a solenoid with 22 turns per centimeter is 0.50 A. The solenoid has a radius of 1.5 cm. A long, straight wire runs along the axis of the solenoid, carrying a current of 27 A. Find the
A copper-bottomed kettle, its bottom 24 cm in diameter and 3.0 mm thick, sits on a burner. The kettle holds boiling water, and energy flows into the water from the kettle bottom at 800 W. What is t
A typical 100 lightbulb produces 4.0 of visible light. (The other 96 are dissipated as heat and infrared radiation.) What is the light intensity on a wall 1.7 away from the lightbulb?
If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system?
A rowboat crosses a river with a velocity of 3.51 mi/h at an angle 62.5° north of west relative to the water. The river is 0.800 mi wide and carries an eastward current of 1.25 mi/h. How far ups
A 130-g baseball, moving along the x-axis with speed 29.0 m/s strikes a fence at a 45 degree angle and rebounds along the y-axis with unchanged speed. Give the x and y components of its change in mo
After landing on a long runway an airplane travels a distance of 1225 m before coming to a stop. If its deceleration during this process was a constant 2.0 m/s2, what was the landing velocity of th
The electric field 4.5 cm from a very long charged wire is (2300 N/C toward the wire). what is the charge (in nC) on a 1.0 cm long segment of the wire?
A steel beam that is 5.00 m long weighs 320 N. It rests on two supports, 3.00 m apart, with equal amounts of the beam extending from each end. Suki, who weighs 525 N, stands on the beam in the cent
1.00 V potential difference is maintained across a 7.0 resistor for a period of 20.0 s. What total charge passes through the wire in this time interval?
A firefighter of mass 85 kg slides down a vertical pole with an acceleration of 4.9 m/s2. What is the friction force that acts on the firefighter?
a 2.00 kg stone attached to a rope 4.00m long is whirled in a circle horizontally on a frictionless surface, completing 5.00 revolutions in 2.00 s. Calculate the magnitude of the tension in the rop
How did financial consideratiion and the international market affect the precolonial, colonial, and postcolonial world's experience with justice and injustice.
The second crewman, on the opposite side of the lock, pulls at an angle of 45 .With what force should the second crewman pull so that the net force of the two crewmen is in the forward direction?
A silicon monoxide (n = 1.45) film of 100 nm thickness is used to coat a glass camera lens (n = 1.56). What wavelength of light in the visible region (390 to 710 nm) will be most efficiently transm
A blacksmith heats a 1.9kg iron horseshoe to 480 degree C, then plunges it into a bucket containing 10kg of water at 20 degree C. The specific heat of iron is 447J/kgK. What is the final temperatur
A Cessna aircraft has a lift-off speed of 137 km/h. What minimum constant acceleration does this require if the aircraft is to be airborne after a take-off run of 219 m?
When identical amounts of heat are supplied to each, the glass bar reaches a temperature of 92 °C, while the other bar reaches 268.0 °C. What is the specific heat capacity of the other subst
A magnifying glass has a converging lens of focal length of 17.4 cm. At what distance from a nickel should you hold this lens to get an image with a magnification of +2.40?
The roller-coaster car shown in Fig. 6-41 (h1 = 30 m, h2 = 15 m, h3 = 30 m), is dragged up to point 1 where it is released from rest. Assuming no friction, calculate the speed at points 2, 3, and 4
In a laboratory experiment, nine equal negative point charges are placed symmetrically around the circumference of a circle of radius r. Calculate the magnitude of the electric field at the center
Suppose that a diffraction grating produces first-order tracking beams that are 1.1 mm apart at a distance of 2.9 mm from the grating. Estimate the spacing between the slits of the grating.
What is the pressure (in kPa) exerted by an object that has a base which is 2.0 cm by 4.0 cm nd a weight of 45.0 N.
Three uniform spheres of mass m1 = 2.50 kg, 4.00 kg, and m2 = 6.00 kg are placed at the corners of a right triangle. Calculate the resultant gravitational force on the 4.00 kg object, assuming the s