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A two-stage missile is fired vertically from rest with acceleration as shown in the graph. In 15 sec, the first stage, A, burns out and the second stage, B, ignites. How fast is the missile moving and how far has it gone at t = 20 sec.
A) v = 360 m/s; s = 3.60 km
B) v = 430 m/s; s = 4.30 km
C) v = 500 m/s; s = 5.00 km
D) v = 395 m/s; s = 3.69 km
An object is placed between two plane mirrors arranged at right angles to each other at a distance d1 from the surface of one mirror, how many images are formed
In order to manufacture these coffee tables, the company would need to incur $525,000 in fixed costs for new equipment. Calculate the break-even point of the coffee tables in units sold.
A sonar device makes a soundwave in the air with a frequency of f1 = 61 Hz. What is the frequency of the sound wave created
An AC generator with a variable frequency is connected across a 45 cm piece of the coaxial cable( outer radius of 4.5mm and an inner radius of 1.5mm, what is the new resonant frequency
A rotating space station is said to create "artificial gravity"-a loosely-defined term used for an acceleration that would be crudely similar to gravity, what angular velocity would produce an "artificial gravity" of 9.80 m/s2 at the rim
A 9 kg rock is suspended by a massless string from one end of a 3 m measuring stick. What is the weight of the measuring stick
It takes 35J of energy to move a 0.35mC charge from one plate of a 35%u03BCF capacitor to the other. How much charge is on each plate
A Carnot refrigerator absorbs heat from a space at 15 degrees C at a rate of 16000 kJ/h and rejects heat to a reservoir at 36 degrees C. Determine the COP of the refrigerator, the power input (kW) and the rate of heat rejected to the high temperature..
What will be the lowest possible temperature to which very dry air at T = 104F can be cooled by evaporation? Consider p = 1000hPa and latent heat of vaporization constant and equal to 2.4 x 10^6 J/kg.
The energy imparted to an electron as it moves through a potential of magnitude V is eV, where e is the charge on an electron. How do you find theoretical value for the slope of your line
During a running long jump, an athlete runs with a speed of 9 m/s horizontally and, upon take off, how far will the athlete jump
The electric field at point P just outside the outer surface of a hollow spherical conductor of inner radius 10 cm and outer radius 20 cm has magnitude 445 N/C, what is the charge on the inner surface of the conductor
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