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1.An object has a mass of 1.3g volume of 1.4cm3. What is the density of this object?______g/cm3 What is the object's specific gravity?
2. A box has a weight of 735N and a surface area of 0.050m2. If the box rests on a floor, what is the pressure on the floor?________x 10^4 Pa
3.What is the ratio of diameters needed for a hydraulic jack to have a force amplification factor of 36?
4. An object has a specific gravity of 1.1. It is dropped into a fluid with specific gravity of 1.2. Will the object sink or float?
5. An object displaces 0.025m3 of water when completely submerged. What is the buoyant force on the object?______x 10^2 N
For the under-reinforced design in ( c ), assuming the beam is constructed in Brisbane, determine thstress in steel byassuming Ms= 0.45M*, in which M* = φMu.Comment if the stress in steel complies with Cl.8.6.1 of AS3600(2009). Determine the crack wi..
A 13.0 k? resistor and a capacitor are connected in series and then a 12.0 V potential difference is suddenly applied across them. Calculate the time constant of the circuit
A proton is shot at 5 × 107 m/s toward a gold atom, with a mass 197 times that of the proton, What is the recoil speed of the gold nucleus
An astronaut on a strange planet finds that she can jump a maxhorizontal distance of 16.0 m if her initial speed is 2.00m/s. What is the free- fall acceleration on the planet
A train engine of mass 51 00 kg is connected by a rope to a boxcar of mass 15 00 kg. What is the tension on the second rope
The distance between the objective and eyepiece lenses in a microscope is 20 cm. The objective lens has a focal length of 5.0 mm. What eyepiece focal length will give the microscope
What is the equilibrium temperature of the aluminum and water mixture for the second group?
If the mass of the child and sled is 40 {rm kg}, what average force do you need to apply to stop the sled? Use the concepts of impulse and momentum.
A 1 170.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 9 800.0 kg truck moving in the same direction at 20.000 m/s. What is the change in mechanical energy of the car-truck system
a 40-car train travels along a straight track at 40 mph. a skier speeds up as she skis downhill. on which is the net
Someone standing at the edge of a cliff throws one ball straight up and another ball straight down at the same initial speed. Neglecting air resistance, the ball to hit the ground below the cliff by the greater speed will be the one thrown downward.
Calculate the ratio of the kinetic energy to the potential energy of a simple harmonic oscillator when its displacement is 1/8 its amplitude
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