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Q1. Two 53 {rm g} blocks are held 30 {rm cm} above a table. One of them is just touching a 50-long spring. The blocks are released at the same time. The block on the left hits the table at accurately the same instant as the block on the right first comes to an instantaneous rest.What is the k constant?
Q2. You swing a 2.70 kg stone in the circle, using the full length of a thin 77.0 cm rope. At what speed must you swing it so its acceleration would be 9.8 {rm m/s^2}?
Q3. Modern electroplaters can cover a surface area of 150 m2 with one troy ounce of gold (volume = 1.811 cm3). What is the thickness of electroplated gold?
Air is trapped above liquid ethyl alcohol in a rigid container. If the air pressure above the liquid is 1.11 atm, determine the pressure in the bulb inside a bubble 4.0 m below the surface of the ethanol.
Calculate the energy of the electron in the ground state of double ionized lithium, which has an atomic number Z = 3
How numerous forces act on the brick
If the ultimate shear strength of steel is taken to be 2.50x 10^9 Pa, what force is required to punch through a steel plate 2.2cm thick? Assume the superhero's fist has cross-sectional area of 8.00x 10^1 cm2 and is approximately circular.
Suppose 60kW is to be transmitted over two 0.150? lines, Estimate how much power is saved if the voltage is stepped up from 200V to 2000V
if an electron is confined to a region of size 35.2 nm, what is the minimum possible uncertainty in its momentum
A particle moves along the x axis unset the influence of a stationary object. The force exerted on the particle is given bu F=8x^3, where f is in newton's and x is in meters. if x=0 is taken to be the zero of potential energy, then the potential e..
A disk, initially rotating at 106 rad/s, is slowed down with a constant angular acceleration of magnitude 2.24 rad/s2. How much time does the disk take to stop
At what speed (m/s) would a 1140-kg car have the same momentum as a 12,600-kg truck traveling at17.8km/hr,What is the car's change in momentum
Illustrate what is the magnitude of the net torque on the wheel due to these three forces for an axis perpendicular to the wheel and passing through its center?
A tank of volume 0.5 m^3 contains oxygen at a measure of 1.5 x 10^6 Pa and a temperature at 20 degrees C. How many kilomoles of oxygen are in the tank
question1two bicycle tires are set rolling with the same initial speed of 4.00ms along a long straight road and
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