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A balloonist records her altitude as 1208 meters. At the same time she measures the angle of depression of the landing spot to be 17 deg. How far away, to the nearest meter, is the landing spot from a point on the gorund vertically below the balloon?
During a 80-ms interval, a change in the current in a primary coil occurs. This change leads to the appearance of a 6.1-mA current in a nearby secondary coil. The secondary coil is part of a circuit in which the resistance is 12 Î
an emergency vehicle siren is designed to emit an 8000 hz sound. you hear a 9143 hz tone as it approaches you at 40.0ms
A steel cable has a cross-sectional area 3.44 × 10-3 m2 and is kept under a tension of 1.53 × 104 N. The density of steel is 7860 kg/m3. Note that this value is not the linear density of the cable. At what speed does a transverse wave move along t..
A certain kind of glass has nblue = 1.560 for blue light and nred = 1.510 for red light. what is the angle between the red and blue light
A irregular piece of metal has a dry mass of 5.7 kg. Once it is submerged it has an apparent mass of 2.4 kg. What is the density of the piece of metal
A 5 kg mass is attached to a 1-m long string. If the speed of the mass at the bottom of the swing is 3 m/s, what it the force in the string at this point
An LCR circuit consists of a 100 ohm resistor, a 10F capacitor, and a 5 mH inductor, and is driven by an acemf source whose frequency can be varied.
Two particles having charges of 0.520 nC and 18.7 nC are separated by a distance of 1.10 m, Where would the net electric field be zero if one of the charges were negative
A 1000 {rm kg} wrecking ball hangs from a 15 {rm m}-long cable. The ball is pulled back until cable makes an angle of 25.0^circle with the vertical. By how much has the gravitational potential energy of the ball changed .
You stand on a frictionless platform that is rotating at anangular speed of 1.2 rev/s. Your arms are outstretched, and you hold a heavyweight in each hand. What is the resulting angular speed of the platform
A computer disk is 8.0 in diameter. A reference dot on the edge of the disk is initially located at the disk accelerates steadily for 0.50, reaching 2000.
A capacitor is made from two hollow, coaxial, iron cylinders, one inside the other. The inner cylinder is negatively charged and the outer is positively charged; the magnitude of the charge on each is 10.0pCpC .
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