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The position of a crate sliding down a ramp is given by x = 0.25t^3, y=1.5t^2, z=6-0.75t^2.5, all in units of m where t is in units of s. Determine the magnitudes of the crate's velocity and acc
It uses 1 kW of power. Will the circuit breaker trip? b) Your roommate plugs in a 1 kW hair dryer while you also are using your hair dryer. Will the circuit breaker trip?
Using the components system shown provide an expression for the velocity and ACCELERATION of the airplane when x =350m. Express the velocity in m/s and acceleration in m/s^2.
A vehicle starts from rest then moves rectilinear with a velocity of v = 2t^2 for 5 s until it reaches a velocity of 50 ft/s. Construct the v-t, s-t and a-t graphs for this system.
The magnitude and direction of the smallest force in portion BC of the band for which the resultant R of the 2 forces exerted on the hand at A is directed along a line joining points A & H?
Knowing that the ball takes 3 seconds to hit the bottom of the lake, find the depth of the lake and the speed of the ball when it hits the bottom.
The experiment is repeated with a metallic sphere of the same diameter, but unknown composition with a mass of 1.263 kg. If the same observed temperature change occurs in 4.59 s, what is the spec
If the probe surface has an emissivity of 0.8 and it does not receive radiation from other surfaces, such as the sun, what is its surface temperature of the probe?
The heater surface is exposed to air that is also at 20°C but for which h = 50 W/m^2K. What is the corresponding surface temperature of the cylinder?
The inner and outer surface temperatures of a glass window 5 mm thick are 15°C and 5°C. What is the heat loss through the a 1m X 3m window if the thermal conductive of the glass is 1.4 W
If it takes 45s to make the turn, determine the magnitute of the boat's acceleration during the turn. (A to B is half a circle or 180 degrees)
What is the corresponding change in heat flux through the roof when the heat transfer coefficient changes from 5 to 30 W/m2 K?
While flowing through the blower the air temperature can be approximated as constant; the pressure rises by 2 inches of water. What is the air velocity in the duct? Report your answer in ft/s.
What water mass flow rate is required? Report your answer in gpm (gallons/minute). The analysis you just performed assumes no heat exchange between the HX and its surroundings.
The end of the lever arm moves 50cm and the load moves 20cm. a) Determine the mechanical advantage b) Determine the velocity ratio c) Determine the efficiency of the system.
Calculate: (assume constant specific heat of Cp=0.24 Btu/lbm.R and k=1.4) a) The compressor exit temperature (T2) and the turbine exit temperature (T4), b) The air mass flow rate, and c) The cycle
If the vector v forms an angle theta= 0.09 rad with the horizontal direction, determine the Cartesian representation of v relative to the (i,j) component and 1.8.
If the basement is heated by a gas furnace operating at an efficiency of n_f = 0.90 and natrual gas is priced at C_g = $0.02/MJ, what is the daily cost of the heat loss?
Explain why the component does not accelerate down through the conveyor whilst resting at the buffer I have worked out A, B & C but really need help with D & E.
The mix leaves the chamber at 200kPa and 70 dgree clecius, heat is lost to the surroundings at a rate of 190 Kj/min. Determine the rate of entropy generation during this process. Calculate the net
calculate: (assume constant specific heat of Cp=0.24 Btu/lbm.R and k=1.4) a) The compressor exit temperature (T2) and the turbine exit temperature (T4), b) The air mass flow rate, and c) The cycl
Determine the velocity of the particle as a finction of its position s. Evaluate your expression for s = 5 m if k = 0.1m^-1s^-2 and the initial conditions at time t = 0 and So = 3 m and Vo = 10 m/
Find: 1. the initial volume of the liquid-ice mixture, in m3, 2. the volume after all the ice is melted, in m3, 3. will the temperature of the liquid water increase or decrease? Why?
The membrane then breaks and the final overall density is found to be 1.778 kg/m3. Determine the initial density of the gas that existed in section B (kg/m3).
If a woman has a weight of 130 lbf at sea level. Find in miles above sea level, where the weight of the woman will decrease by (a) one percent (b) two percent.