A rock is thrown horizontally from a building at 15 m/s. It hits the ground 45 m from the base of the building. How high was the building?
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Answer:
Explanation:
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Related Questions
Which object is most efficient?
a. A heat engine that produces 30 J of work for 60 J of input energy.
b. A heat engine that produces 15 J of work for 30 J of input energy.
c. A heat engine that produces 20 J of work for 60 J of input energy.
d. A heat engine that produces 40 J of work for 50 J of input energy.
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Answer:
It is b
Explanation:
Two identical spheres (of equal mass) a distance of 10 meters apart exert a force of gravity of 0.00050 N on each other. What are their masses?
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Answer:
The gravitational force between two objects is written as:
F = G*m1*m2/r^2
Where:
G = 6.67*10^(-11) m^3/kg*s
m1 and m2 are the masses of the objects.
r is the distance between the objects.
In this case, we know that:
F = 0.0005 N
r = 10m
and because the two spheres are identical, we have that:
m1 = m2 = M
then we have the equation:
0.0005 N = (6.67*10^(-11) m^3/kg*s)*(M^2/(10m)^2)
0.0005 N*(10m)^2/(6.67*10^(-11) m^3/kg*s) = M^2
√( 0.0005 N*(10m)^2/(6.67*10^(-11) m^3/kg*s) ) = M = 27,379.3 kg
The mass of each sphere is 27,379.3 kg
Why is it hard to respond with action at times?
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what is the process of subduction
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Answer:
Subduction is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle. Regions where this process occurs are known as subduction zones.
Please explain the different ways offense can score and how many points each way is worth? Answer in complete sentences.
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Answer:
what sport bruh
Explanation:
Answer:
in wat sport exactly
Explanation:
in eat sport
can anyone help me with this
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Answer:
earth is 4.54 billion years old
for an organism to survive they would have to change ( mutate )
A mutation is any permenant change in dna of a gene or chromosome
some mutations are bad and some can be good
Explanation:
Which of the following is strenuous?
Atraining for an athletic competition
Bsharing a candy bar with a friend
Creading an exciting mystery
Dforgetting to complete your homework
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Answer:
I think it c
Explanation:
Answer:
Atraining for an athletic competition
What is the pigment in the leaves called?
1.Chloroplasts
2.Green
3.Stroma
4.Chlorophyll
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Answer: D: Chloroplasts
Explanation:
Answer: d
Explanation:
i need help this is due to day!! i will give brainliest
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Answer:
One arm row: Latissmus Dorsi (Lat)
Dumbell flys: Shoulders
Machine back press: pectorals
Push downs: Triceps
Explanation:
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Bicycle A with mass 40 Kg is traveling with a velocity of 4 m/s and Bicycle B with mass 20 Kg is traveling with a velocity of 2m/s. The two bicycles have kinetic energy
Calculate it and state which bicycle has higher energy and why?
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Answer:
bicycle A has a greater K.E.
Explanation:
K.E = 1/2mv²
bicycle A = 1/2 × 40 × 4² = 320J
bicycle B = 1/2 × 20 × 2² = 100J
bicycle A has a greater K.E. because it has bigger mass and moves with faster velocity
How long does it take for light to travel 1m? and a 1mm?
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Answer:
Hi. U should do like this
Answer:
3.335641 nanoseconds for meters