12/14/20

How did the Founding Fathers respond to conflicts regarding a new plan for the government?
Select three correct answers. They created a system of government in which the people were not directly involved. They promoted the ruling of a king to help establish a stable government. They... more
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12/14/20

The question is too long for the title. I don't understand how to solve it. Can anyone help?
On his way to work from home, your uncle averaged only 20 miles per hour. On his drive home, he averaged 40 miles per hour. If the total travel time was 1.5 hours, how long did it take him to drive... more
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12/14/20

Chemistry structure

Silicon carbide, SiC, has structure similar to diamond. Boron nitride, BN, has structure similar to graphite. Bronze is an alloy of copper.I All of these substances are bonded covalently.II All of... more
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12/12/20

Physics- Swings and Springs
Find the spring constant k if the spring is stretched a distance 46 m by a suspended weight of 44 N. The acceleration of gravity is 9.8 m/s 2 . Answer in units of N/m.
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12/12/20

Rotational Motion in Physics
If a 1.5kg weight is hung from the 0cm mark at one end of a meter stick that weighs 1kg, where should you put your finger to balance the stick?
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12/10/20

Chemistry Question

1.00 mole of sodium sulfate (Na2SO4) is dissolved in 10.0 L of water. What is the concentration of potassium ions in the resulting solution? A. 0.200 M B. 0.500 M C. 0.400 M D. 0.100 M
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12/10/20

The hypotenuse of a right triangle is 3 times longer than one of its legs. Write the length of the third leg as a function of the known leg. (Simplify your answer)
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12/10/20

Which equation shows 2x + 6y = 6 converted to slope-intercept form?
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12/09/20

How many grams of sodium are required?
How many grams of sodium are required to completely react with 19.2 L of Cl₂ gas at STP according to the following chemical reaction? Remember 1 mol of an ideal gas has a volume of 22.4 L at STP 2... more
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12/09/20

A 3 mol sample of gas is stored in a 5 L container at 2 atm and -10 C. If the container is heated to 50 C and 3 mols of gas are added, what is the pressure inside the container?
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12/09/20

What is its power consumption when the current flowing through the train's motor is 1,970 A?
An electric train operates on 875 V. What is its power consumption when the current flowing through the train's motor is 1,970 A?
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12/09/20

What is the heater's resistance?
A current of 25.5 A flows through an electric heater operating on 220 V. What is the heater's resistance?
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12/09/20

Stoichiometric Calculations
C2H4 + 3O2 2CO2 + 2H2OGiven 15.0 g of ethene (C2H4) ( and excess oxygen):How many moles of water will be produced?How many grams of carbon dioxide will be produced? with work out please
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12/08/20

A solution contains 0.750 g Mg2+ in enough water to make a 1925 mL solution. What is the milliequivalents of Mg2+ per liter (mEq/L) for this solution?
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12/04/20

How can I solve this physics problem?
A student sits on a freely rotating stool holding two dumbbells, each of mass 3.09 kg (see figure below). When his arms are extended horizontally (Figure a), the dumbbells are 0.99 m from the axis... more
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11/06/20

Physics - Rotation
Two ice skaters are holding opposite sides of a large, very flexible spring. When they are 1 m apart they are turning in a circle at about 2 Hz (cycles/s). If, while turning, they stretched their... more
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11/05/20

Calculate the final angular velocity
A cylinder with moment of inertia 12.9 kg m2 rotates with angular velocity 2.03 rad/s on a frictionless vertical axle. A second cylinder, with moment of inertia 30.3 kg m2, initially not rotating,... more
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11/02/20

Help me please?
Romeo (85.0 kg) entertains Juliet (47.0 kg) by playing his guitar from the rear of their boat at rest in still water, 2.70 m away from Juliet, who is in the front of the boat. After the serenade,... more
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11/01/20

Physics Circular Motion
A merry-go-round makes one complete revolution in 8.3 s. A 39.4 kg child sits on the horizontal floor of the merry-go-round 4 m from the center. Find the child’s acceleration. The acceleration of... more
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10/29/20

How does an inelastic collision between the wall and a spring (connected to a device) affect the spring constant?
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01/19/20

What is electronegativity?
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02/04/19

Kinetic energy is the energy that is stored while going downhill. Potential energy is the energy released to get up the hill.
Is this statement true or false?
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04/14/18

When 70.0mL of sample of 0.372M Na2SO4 is added to 100 mL of 0.138M Ca (NO3)2 What percentage of Ca 2+ remains unprecipitated?
When 70.0mL of sample of 0.372M Na2SO4 is added to 100 mL of 0.138M Ca (NO3)2 What percentage of Ca 2+ remains unprecipitated?
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