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(a) How far from a 51.4 mm focal-length lens must an object be placed if its image is to be magnified 2.50 and be real?
(b) What if the image is to be virtual and magnified 2.50?
A typical adult human lung contains about 310 million tiny cavities called alveoli. Estimate the average diameter of a single alveolus
a long solenoid that has 910 turns uniformly distributed over a length of 0.390 m produces a magnetic field of
A piano string is so badly out of tune that the tension must be increased by 10%. Find the percentage increase of the frequency
The electric potential at a position located a distance of 19.2mm from a positive point charge of8.70x10-9C and 11.8 mm from asecond point charge is 1.14kV. Calculate the value of the second charge.
A force vector points at an angle of 64.9 ° above the +x axis. It has a y component of +276 Newton's (N). Find out (a) magnitude and (b) x component of the force vector.
A 10.0-cm long wire has a diameter of 0.1 mm and a resistivity of 4.0 ´ 10-7 ohm-cm, A 6.0-volt battery is connected to the resistance, What current exists in the circuit
question 1nbsp a person pulls a crate with 120 n of force against 100 n of friction a distance of 5 meters. sketch a
Four objects are situated along the y axis as follows: a 2.01 kg object is at +3.16 m, Where is the center of gravity of this system
A person eats a dessert that contains 280 Calories. (This "Calorie" unit, with a capital C, is the one used by nutritionists; 1 Calorie = 4186 J.
suppose the driver in this example now slams on the brakes, stopping the car in 4.00s. find the acceleration and the distance the car traveled while braking
A 70kg person running at an initial speed of 4m/s jumps onto a120kg cart initially at rest. Determine the displacement of the person relative to theground while he is sliding on the cart
A 150g ball has a kinetic energy 27.2J. A) What's the magnitude of its momentum? Express your answer with the appropriate units. B) Use your answer to find its speed. Express your answer with the appropriate units.
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