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A person holds a rifle in a horizontal position and fires at a target. The bullet consists of a muzzle speed of 200 m/s, and the person hears the bullet strike the target 1.60 s after firing it. The
Determine the numbers of amps are needed to plate at a rate of 1 mg/sec? Hint: The ions involved are Ag+, Zn2+, and Cu2+. An electroplated surface of Sterling Silver (92.5% w/o Ag; 7.5% w/o Cu) is to
The doorway has shape of the parabolic arch and is 12 feet high at center and 8 feet wide at base. If the rectangular box 9 feet high should fit through doorway, find maximum width the box can have?
Determine the entropy change of 1.00 mol of Ar in a rigid container when the gas is heated from 25°C to 55°C. The molar constant volume heat capacity of Argon gas is having 20.79 J mol-1K-1
A mass m which is suspended from a spring having spring constant k is pulled down to a point P which is a distance d below the equilibrium point and then free.
In genetic research the small colony of drosophila (small two-winged fruit flies) is grown in the laboratory environment. Find population of colony in 14 days?
Ar gas is sealed in a12.8 L rigid container at 1.00 atm, at 25°C. Calculate the entropy change of the gas, when it is heated to55°C?
Determine the pH when 5 mL of 0.5 M HCl is added to 1 L of the buffer. Explain what pH would you expect if you added the same quantity of HCl to 1 L of pure water?
Their gravitational interaction causes the stars to be pulled toward one other. Determine the speed of the stars just before they collide.
Determine the number of dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?
Assume that 2¢ is deposited in the savings account paying 1% annual interest compounded continuously. How much money will have accrued in account after 2000 years?
A gas constant pressure consists of a volume of 35.0m3, and its temperature is 20.0 degree C. Determine its volume if its temperature is increased to 100.0 degree C at the similar pressure? Is this
At 20 degrees C a lump of pure copper weighs 25.023g in air and 22.122g when submerged in water (D=0.9982 g/ml). Then suppose the copper is rolled into the 254 cm2 foil, of uniform thickness so
A inductor of 5H is subjected to the electric current which changes at a rate of 4.5 amps per second. Determine how much of a voltage drop will there be across the inductor?
Determine how will the angular acceleration of a disk raise if we were to raise the radius by a factor of 7.48?
Pinky consists of a mass of 3.54 kg sits on a pump handle at a distance of 35.57 cm from the axis of rotation. By using this information, determine the torque of Pinky when the handle is 66.8° f
The rotational inertia of the collapsing spinning star changes to 1/4 its initial value. Determine the ratio of the new rotational kinetic energy to the initial rotational kinetic energy?
An electric heater is made by applying a potential difference of 110 V across a wire having a resistance of 5.0Ω. Determine the power rating of the heater in kW?
The electron of charge q = -1.60 x 10^-19C is moving with a speed of 3.00 x 10^3 m/s perpendicular to the steady magnetic field of strength 0.200 T. When it is moving in a circle and travels 400 m,
Five flood-lights of 250 watt operate at night for 8 hours. When the cost of electricity if $0.08 per kWh, determine the cost of running the flood-lights for 14 nights?
The magnitude of torque on a square loop of area A having current I in a constant magnetic field of magnitude B if the magnetic field is parallel to the plane of the loop is?
A spool of thread consists of an average radius of 1.00cm. When the spool comprises 62.8 m of thread, determine the number of turns of thread on the spool?
A proton is positioned on the Earth's magnetic equator at 1000 m altitude. In which direction will it be deflected if it is projected downward? Describe in depth please.
The magnetic field of 1.2 T is present at an angle of 30 degree to the horizontal direction (or positive x axis). Determine the magnitude of the force experienced through the proton? (qp = 1.6 x 10^
Suppose that time of death corresponds to t = 0 and that core temperature at that time was 98.6°F. Find how many hours elapsed before body was found.