11/22/16

Momentum And Collision 7
A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder. What is the average force (in N) exerted on a 0.0200 kg bullet to accelerate it to a speed of... more
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11/22/16

Momentum And Collisions 5
(a)Calculate the momentum of a 2200 kg elephant charging a hunter at a speed of 7.50 m/s.   kg · m/s   (b)Compare the elephant's momentum with that of a 0.0400 kg bullet fired at a speed of 600... more
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11/22/16

Momentum And Collisions 4
A pitcher claims he can throw a 0.159 kg baseball with as much momentum as a 3.5 g bullet moving with a speed of 1.50 ✕ 103 m/s.What must the baseball's speed be if the pitcher's claim is valid? ... more
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11/21/16

How would I do this problem backwards? It's and indefinite integral, however I don't know how to find f(x)
The question states: If f(x) is even and ∫-5 to 5 (f(x) − 5) dx = 6, find ∫0 to 5f(x) dx   I would appreciate any help. Thank you.
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11/21/16

Chemistry Help!
What is the temperature in K of 0.0420 mole of gas at 16.3 psi and that occupies 981... more
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11/21/16

What is m to the power of n?
Thad just learned about matrix multiplication. He began to wonder what happens when you take powers of a matrix. He computed the first few powers of the matrix m= 1 1 and noticed a pattern. What is... more
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11/21/16

My collection of spiders and beetles has 8 heads and 54 legs. How many are there of each?
My collection of spiders and beetles has 8 heads and 54 legs. How many are there of each?
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11/20/16

What's the velocity of the ball bearing
A ping pong ball (0.15kg) strikes a stationary ball bearing (2kg) head on at 15m/s forward. The ping pong ball ricochete's backwards 12m/s after the strike what is the resulting velocity of the... more
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11/20/16

Proof question: "Prove that if 𝑛 is an odd integer then ⌈ (2𝑛+1) / 2 ⌉ = 𝑛 + 1"
Am I wrong in thinking that the 2's in the numerator and denominator should cancel each other out, leaving me with ⌈𝑛+1⌉= n + 1, and because n + 1 is an integer, that it's ceiling is simply n + 1?... more
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11/20/16

At 20 C, a gas has a volume of 0.20 m3. The gas is heated until its volume doubles. What is its new temperature in Celsius degree?
At 20° C, a gas has a volume of 0.20 m3. The gas is heated until its volume doubles. What is its new temperature in Celsius degree?  
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11/19/16

Fraction word problem HELP!
I am an adult trying to help a 5th grade child with this question.   Can someone show me how to solve it step by step so I can explain it to her?   Brendan tried to fill an empty vase with 6... more
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11/19/16

Linear System Application
A movie theater charges $ 10 for adults and $ 7 for seniors. On a particular day when 345 people paid an admission, the total receipts were $ 2535. Round your answers to the nearest integers.
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11/18/16

Skylar's salary is twice Steves salary. Together they earn $1500 per week. How much does each person earn?
I need the equation to solve this
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11/17/16

Finding Integers
For 2 consecutive intgers, the result of adding the smaller integer and triple the larger integer is 79. What are the two integers.
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11/17/16

Percentages and Given Numbers
If 40% of a given number is 8, then what is 15% of the given number?
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11/17/16

Help please
Question 3. Find an equation for the line parallel to y = x+8 and goes through the point (-9,8).Write your answer in the form y = mx+b Y=
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11/17/16

Guy drives from pointA to pointB and back. Driving to pointA h drives an average of 96km/h,Returning he drives 100km/h. The total time driving is 5.1 hours.
Calculate the Distance from pointA to pointB. Solve using substitution. The answers are either:   A.)200km B.)250km C.)300km
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11/17/16

The current in a circuit varies inversely as the resistance.
The current in a circuit varies inversely as the resistance. The current is 18 amperes when the resistance is 2 ohms. Find the current for a resistance of 15 ohms.
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11/17/16

Determine the constant of variation for the stated condition.
Determine the constant of variation for the stated condition.s varies directly as r, and s equals=45 when r equals=5.
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11/17/16

Determine the constant of variation for the stated condition.
Determine the constant of variation for the stated condition.y varies inversely as x, and y equals=6 when x equals=11
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11/16/16

physics-KE question
A girl on a playground swing starts from rest at an angle θ=34.2 from the vertical. The chains have length L=6.8 meters. Find her speed as she passes through the bottom of the swing. Assume no... more
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11/16/16

2D Force Problems
3. A 50 N applied force (pulling 30° up from the horizontal) accelerates a 5 kg box across a horizontal floor. a) What is the normal force on the box?b) If the coefficient of friction between the... more
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11/16/16

In Nazi Germany, relativity and theoretical physics were dismissed as “Jewish physics” and rejected
according to the film copenhagen
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11/15/16

what is 150% of $22?
My question is describing application of percents.
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11/15/16

Thanks so much!! Charlie (35 kg) is at rest on frictionless ice with his 5 kg lunch box. He slides his lunch box to the right at 4 m/s where it hits a spring an
Charlie (35 kg) is at rest on frictionless ice with his 5 kg lunch box. He slides his lunch box to the right at 4 m/a where it hits a spring and experiences an elastic collision. Find the velocity... more
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