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a 2.50 kg firework shell is fired straight up from a mortar and reaches a height of 110 m. Neglecting air resistance, calculate the shell's velocity when it leaves the mortar.
The motar itself is a tube of 0.450 m long. Calculate the average acceleration of the shell in the tube as it goes from zero to the velocity found in (a). What is the average force on the shell in the mortar? express your answer in newtons and as a ratio to the weight of the shell
The reflected sound is then mixed with the transmitted sound and 90 beats per second are detected. The speed of sound in body tissue is 1480.
A near-sighted person's eyeglasses has a focal length of ? 22.0 cm, and the lens is 1.8 cm from the eye. what should be the focal length of the corresponding contact lens
(1) A circular wheel has a radius R = 0.45 + or - 0.02 m. The wheel is observed to be rotating uniformly with period T = 2.00 +or- 0.05 s. (i) Compute the frequency with which the wheel spins (ii) Compute the angular speed of the wheel. (iii) Comp..
Type your question hereTwo converging lenses are separated by 23.80 cm. Determine the final image distance relative to the lens on the right
If a capacitor has the initial charge of 5.0uC, L = 0.080H, C = 10uF, and R = 0, What is the maximum energy stored in the inductor
A 0.800mm -diameter ball bearing has 2.50×109 excess electrons, What is the ball bearing's potential
What frequency will hear after the train passes
A charge of +378 C is fixed at the center of a square that is 0.64 m on a side. How much work is done by the electric force as a charge of +1.8 C is moved from one corner of the square to any other empty corner?
The cubit is an ancient unit. Its length equals six palms. (A palm varies from 2.50 to 3.50 inches depending on the individual.) We are told Noah's ark was 300 cubits long, 50 cubits wide and 30 cubits high.
The two spheres are then connected by a thin conducting wire, What is the charge on the first sphere after the two spheres are connected by the wire
A 50g ball of clay traveling at speed v0 hits and sticks to a 1.0kg block sitting at rest on a frictionless surface. what os the speed of the brick after the collision
Four objects are situated along the x axis as follows: a 1.70kg object is at -0.9m, a 1.60kg object is at 0.2m, a 2.4-kg object is at the origin, and a 2.50kg object is at -1.10m.
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