10/22/18
A 3/8-pound of cheese contains 4 servings. How much cheese is in one serving?
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Vector HELP !!!
A vertical force of 5 (pounds) moves an object from point (4,3,7) to (10,-1,9), where distance is measured in feet. The force vector is F = The displacement vector is d =The work done by the force...
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10/21/18
Two bodies of masses m1 and m2 are dropped from heights h1 and h2. If they have equal momenta on reaching ground and h1>h2. Will the ratio of kinetic energy of m1 to that of m2 is greater than 1
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10/21/18
Can you answer this force problem?
A 0.14kg baseball travelling 30m/s strikes the catcher' s mitt, which, in bringing the ball to rest recoil 10 cm. What is the average force applied by the ball on the glove?
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10/21/18
How do I solve this physics problem on force?
A wooden block weighs 2.00×10^3N. If a horizontal force of 1.00×10^2N is required to keep it in motion with a uniform speed on a horizontal surface, what is the coefficient of sliding friction?
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10/20/18
A small radio operates on 4.11 V and has a resistance of 22.68 Ω. At what rate does this radio use electric energy?
show units: type V for Volts, A for amps, ohms for Ω , W for Watts, eV for electron volts, Hz for Hertz, N for newtons, m for meters, s for seconds, J for Joules, W for Watts, m/s for meters per...
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10/20/18
What is the energy in eV for the n=1 of a hydrogen atom.
(show units: type V for Volts, A for amps, ohms for Ω , W for Watts, eV for electron volts, Hz for Hertz, N for newtons, m for meters, s for seconds, J for Joules, cal for calories, m/s for meters...
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10/20/18
Find the value of b
Find the value of b such that the system of equationsbx-20y=1212x+16y=-11does not have a solution.
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10/20/18
how many molecules of water does a 48 gram sample of H2O contain?
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10/19/18
A 4.10-mole sample of helium gas at 28°C takes up a volume of 3.28 L. Determine the pressure of helium in units of atm.
How do I solve this. What’s the formula
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10/19/18
Write a linear function f with f(0)=7 and f(3)=1
I am having trouble with figuring out how to get the equation, i don't understand. If you could somehow explain, then that would be nice.
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10/19/18
Physics projectile motion
A soda can rolls off a table top and lands 0.225 m away 0.416 seconds later How tall was the table?
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10/19/18
D(t) = 60e6^−0.3t. How many milligrams of the drug remain in the patient's bloodstream after 3 hours?
Please help. I am very confuse on what to do. Answer will be in mg.
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A geyser sends a blast of water in the air with a velocity of 96 feet per second. Find the height of the water after 4 seconds. What is the max height of the water? How long is the water in the air?
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How do I solve for y for 2x^2 - y = 0?
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10/18/18
When a number is decreased by 20% of itself, the result is 88. What is the number?
Couldn’t find the concept to this
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10/18/18
Factor the common factor out of the expression (numbers that directly follow a variable are exponents)
10x2 + 2x - 5xy - y
-xz - 3yz + 4x + 12y
x2(y2 + 3) + 2(-3 - y2)
7y(3 - x2 + 2x) + (-2x + x2 - 3)
I do not understand these ones
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How long will it take an object dropped from a 550 foot tall tower to land on the roof of a 233 foot tall building?
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