When a body of mass 1.0 kg is suspended from a certain light spring hanging vertically, its length increases by 5 cm. By suspending 2.0 kg block to the spring and if the block is pulled through 10 cm and released, the maximum velocity of it in m/s is approximately
In: Physics
sulfur mustard formula is C4H8Cl2S
1. How many moles of sulfur are in 35.6 g of sulfur mustard
2. How many atoms of sulfur are in 1.0 mol of sulfur mustard
3. How many grams of sulfur are in 3.5 x 1023 molecules of sulfur mustar
In: Chemistry
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the first segment at a speed of 9.0 m/s .
What is the speed in the second segment?
What is the speed in the third segment?
What is the volume flow rate through the pipe?
In: Physics
Explain how you would make 500 mL of a 20 mM citric acid buffer
at a pH of 7.0. You must specify the components that you would use
and the masses. Explain what will happen if you add 5 mL of 1.0 M
NaOH to this solution.
In: Chemistry
A fish tank has dimensions 42 cmcm wide by 1.0 mm long by 0.80 mm high.
a. If the filter should process all the water in the tank once every 3.0 hh, what should the flow speed be in the 3.0-cmcm-diameter input tube for the filter?
In: Physics
A pilot claims to have seen a UFO moving initially at a speed of about 440 m/s in an easterly direction and then, in a time interval of only 1.0 s, turning 45 degrees and moving southeast at 440 m/s. Compute the UFO’s average acceleration during the turn.
In: Physics
Calculate the mass (in mg) of solid chromium(III) nitrate needed to make 250. mL of an aqueous solution with a pH of 4.00. The Ka of Cr(H2O)63+ is 1.0 x 10−4.
48 mg
3.0 mg
12 mg
6.0 mg
24 mg
In: Chemistry
1) A 25 kVA transformer supplies a load of 12 kW at power factor of 0.6 lagging. How much kVA can be added before the transformer is at rated load
a)when the added load is at 1.0 pf?
b)when the added load is at 0.866 pf leading?
In: Electrical Engineering
Use the following information to answer the next two questions:
Stock Amount Beta
A 25,000 0.2
B 20,000 1.0
C 30,000 1.8
D 25,000 1.6
Risk-free rate is 3% and the market risk premium is 8%
In: Finance
Calculate the initcial I^- concentration in a solution containing 3.0 mL of 0.20 M KI, 5.0 mL of 0.15 M (NH4)2S2O8, 5.0 mL of 0.25 M (NH4)SO4, 6.0 mL of 0.10 M KNO3, and 1.0 mL of 0.012 M Na2S2O3.
In: Chemistry