1.2m/s
boom, ur welcome.
A shipping crate to be transported by cargo ship is raised 26 m above the dock. If its GPE
is 266,375 J, what is the crate's mass?
Answer:
Approximately [tex]1.0\times 10^{3}\; \rm kg[/tex] (assuming that [tex]g = 9.8\; \rm m \cdot s^{-2}[/tex].)
Explanation:
Consider an object of mass [tex]m[/tex] and (relative) height [tex]h[/tex].
The gravitational potential energy (GPE) of this object would be [tex]{\rm GPE} = m \cdot g \cdot h[/tex] (where [tex]g[/tex] denotes the gravitational field strength. Typically,[tex]g = 9.8\; \rm N \cdot kg^{-1}[/tex] near the surface of the earth.)
For the shipping crate in this question:
[tex]{\rm GPE} = 266,\!375\; \rm J[/tex], [tex]g = 9.8\; \rm N \cdot kg^{-1}[/tex] (near the surface of the earth,) and[tex]h = 26\; \rm m[/tex].Rearrange the equation [tex]{\rm GPE} = m \cdot g \cdot h[/tex] to find an equation for [tex]m[/tex]:
[tex]\begin{aligned}m &= \frac{{\rm GPE}}{g \cdot h} \\ &= \frac{266,\!375\; \rm J}{9.8\; \rm N \cdot kg^{-1} \times 26\; \rm m}\\ &= \frac{266,\!375\; \rm N \cdot m}{9.8\; \rm N \cdot kg^{-1} \times 26\; \rm m} \\ &\approx 1.0\times 10^{3}\; \rm kg\end{aligned}[/tex].
Hence, the mass of this shipping crate is approximately [tex]1.0\times 10^{3}\; \rm kg[/tex].
give two reasons why biomass energy might not be a good alternative Energy source
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as for the production of biomass energy wood is mostly used source and burning of wood for the production of biomass energy can lead to the risk of deforestation in the future and emissions of carbons, pollute the surrounding. Thus this is the reason biomass energy might not be a good alternative energy source.
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What is the weather like in a temperate grassland? (Select all that apply.)
summers are mild to hot
winters are cold
summers are cool
winters are mild
A skydiver of mass 65 kg has jumped out of a plane two miles above he surface of the earth. After 50 s, he has reached terminal velocity, meaning he is no longer accelerating. What is the force of the air on the skydiver's body? g = m/s^2. *
Answer:
The force of the air on the skydiver's body is:
[tex]F_{air}=637.7\: N[/tex]
Explanation:
Let's recall that when an object reached terminal velocity, the force of the air acting is equal to the weight of the object, so the net force will be zero, that is why the object falls at a constant speed.
Then we have:
[tex]F_{air}=W=mg[/tex]
where:
m is the mass of the skydiver (65 kg)
g is the gravity acceleration (9.81 m/s²)
Therefore, the force of the air on the skydiver's body is:
[tex]F_{air}=65*9.81=637.7\: N[/tex]
I hope it helps you!
What is one way that nuclear fission and nuclear fusion are similar? A. Nuclei are split into smaller nuclei. B. Atoms are altered in both processes. C. Small nuclei combine to form larger nuclei. D. They are both used to produce electrical power.
Answer:
B. Atoms are altered in both processes
Explanation:
Answer: B. Atoms are altered in both processes
Explanation:
Plssss I need help——— Balloon A is (A. Negatively, B. Not, C. Positively) charged, and balloon C is (A. Negatively, B. Not, C. Positively) charged. Balloon A approaches balloon C, there’ll be a force of (A. Attraction, B. Repulsion) between them.
Answer:
B. Not
C. Positively
A. Attraction
Can anyone please help me solve these?
in tyson's opinion, what is the greatest achievement in human flight
Answer:
voyager 2
Answer: According to Neil Degrease Tyson in his text "To Fly" the biggest achievement of human flight is the voyager 2. Explanation: The reasons behind this are that Tyson explains very well that not the first airplane, helicopter, or space rocket were the biggest achievements
Explanation:
Any element can always be identified by its_____.
Atomic mass
Number of neutrons
Number of protons
Atomic number
Answer:
c
Explanation:
Answer:
Number of protons and atomic number
Explanation:
Witch of the following best describes the forms of electromagnetic waves produced by sunlight ?
A) sunlight contains ultraviolet rays only
B) sunlight contains all types of electromagnetic waves
C) sunlight contains only the three electromagnetic waves that are referred to as light
D) sunlight contains visible light and ultraviolet rays only
sunlight contains ultraviolet rays only best describes the forms of electromagnetic waves produced by sunlight. Hence option A is correct.
What is sunlight ?A fraction of the electromagnetic energy emitted by the sun, including infrared, visible, and ultraviolet light, is known as sunlight. When the Sun is above the horizon, sunlight on Earth is seen as daylight after being dispersed and filtered by the atmosphere. Sunshine, a mix of brilliant light and radiant heat, is what we feel when direct solar radiation is not obstruct by clouds. Sunlight is diffused when it is obstructed by clouds or reflected off of other surfaces. According to sources, the average solar radiation received by each square metre on Earth during a 24-hour period ranges from 164 to 340 watts[1]; according to NASA, this amount represents roughly 25% of the planet's average total solar irradiance.
Sunlight's UV radiation has both favorable and unfavorable impacts on health.
To know more about Sunlight ;
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I need an answer quick
Please help, I don't get this
Freefalling object starts from rest after falling for six seconds what will be its velocity
Answer:
60m/s
Explanation:
since the object is falling under the influence of gravity, the formula is
v = u +gt
before the fall, the object is at rest then
u = 0m/s
v = 0 + 10×6 because acceleration due to gravity is g which is given as 10m/s2
therefore, v = 60m/s
Explain why heavy things and light things hit the ground at the same time ?
Answer:
GRavity
Explanation:
a book is sitting on a table. jackie is pushing the book with a force of 9 N to the right. if the force of friction is 4 N to the left, what is the net force?
1. 5 N right
2. 4 N left
3. 5 N left
4. 4 N right
Answer:
1
Explanation:
4+5 =9
5n to the right
A toy car is placed at 0 on a number line. It moves 9 cm to the left, then 4 cm to the right, and then 6 cm to the lef
What is the total distance the toy car traveled?
Answer:
19 cm
Explanation:
Which of the following best describes how the ocean convection cycle impacts different climates?
A by creating different sea levels
B by adding moisture to the atmosphere
C by transferring heat from the tropics to the colder climates
D by transferring plankton and other sea organisms from cold regions to warm regions
I really need help, I’m giving 90 points to whoever answers
Answer:
the answer is c
Explanation:
by transferring heat from the tropics to the colder climates
The statement which best describes how the ocean convection cycle impacts different climates is by transferring heat from the tropics to the colder climates. Thus, the correct option for this question is C.
What is the Ocean convection cycle?The ocean convection cycle may be characterized as a type of methodology through which the mesoscale ocean circulation and large, strong winds mix layers of water at different depths.
During this cycle, when one part of a fluid is heated, the temperature difference causes by transferring heat from the tropics to the colder climates fluid to move in a current or defined direction. As the heated fluid rises, it is replaced by a cooler fluid, which is sometimes referred to as a convection cycle.
Therefore, transferring heat from the tropics to the colder climates is the process that best describes how the ocean convection cycle impacts different climates. Thus, the correct option for this question is C.
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what is Focal Point
help me please
Answer:
The point at which rays or waves meet after reflection or refraction, or the point from which diverging rays or waves appear to proceed is called focal point
a toy car travels from A to B at constant speed 30km/hr and without stopping at B return A at constant speed v. if the average speed of the car is 24km/h then v is
Answer:
Speed BA = 18 km/hr.
Explanation:
Given the following data;
Speed AB = 30km/hr
Speed BA = x km/hr
Average speed = 24 km/hr
To find the value of x;
Average speed = (Speed AB + Speed BA)/2
Substituting into the equation, we have
24 = (30 + x)/2
48 = 30 + x
x = 48 - 30
x = 18 km/hr
Can someone help with the problems?
Answer:
utrhh
Explanation:
hrtyrt
Explanation:
the answer is b
the second one is a
Please I need help its timed-
Students in a science class observed that when a strip of magnesium (Mg) metal was placed in a test tube containing hydrochloric acid (HCl), the magnesium began to bubble as hydrogen gas and magnesium chloride are formed. Which of the following choices show both the correctly balanced equation and identify the type of reaction?
A.
Mg + 2HCl →2H2 + MgCl2 (single replacement)
B.
Mg + 2HCl →H2 + MgCl2 (single replacement)
C.
Mg + 2HCl →H2 + MgCl2 (synthesis)
D.
2Mg + HCl →H2 + 2MgCl2 (synthesis)
Answer:
c
Explanation:
PLEASE HELP
TOPIC - CONVECTION
Answer:
At B
Explanation:
If it's placed on place B as soon as the cold water arrived it will have time to heat. Hope this helps and best of luck
What is the word for a person from the planet Pluto?
Answer: Native Plutonian
Explanation: It means someone who is on pluto or born on pluto.
Answer: Plutoean, Plutanese, Plutain
Explanation:
I am from pluto, which therefore makes me Plutanese.
btw isnt pluto a dwarf planet...
A constant force of 12 N acts for 5 s on a 5 kg object. What is the change in object’s velocity?
Answer:
"solve: given that F -12 N and time 4 seconds and let we have to find out the P.
F = 12 N
t = 4 s
p = ?
F = m×( v - u ) / t
12 = m×v / 4
m×v = 12× 4
p = 48 kg m/s
Linear momentum will be 48 kg m/s.
Explanation:
Explain why white light splits up into the different colours when it goes through a prism
Explanation:
beacuse light is mixture of many different colours,each with different frequency
Calculate the momentum of a 1000 kg sports car traveling at 30 m/s.
Answer:
30,000 kgm/s
Explanation:
m = 1000 kg
v = 30 m/s
Plug those values into the equation:
p = mv
p = (1000 kg)(30 m/s)
p = 30,000 kgm/s
The momentum of a 1000 kg sports car traveling at 30 m/s is 30,000 kgm/s.Linear momentum = Mass x Speed.
What is the momentum?The product of an object's mass, m, and its velocity, v, is the vector quantity known as linear momentum. It is represented by the letter "p," which is also used to denote momentum.
Mass of car = 1000 kg
Speed by which car moves = 30 m/s. The momentum of the car =?
Recall that:
Linear momentum = Mass x Speed
= 1000 kg x 30 m/s.
= 30,000 kgm/s
The sum of an object's mass (m) and velocity (v) is known as the object's linear momentum. An equation can be used to explain this relationship. Momentum is defined as the body's mass times its velocity. P = m times v, etc.
Therefore, the momentum of a 1000 kg sports car is 30,000 kgm/s if travels at 30 m/s.
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A chemical reaction is the only way to an
A: Element
B: Pure Substance
C: Mixture
D: Solution
Answer:
B: Pure Substance
Explanation:
A 10 kg box initially at rest is pulled with a 50 N horizontal force for 4 m across a level surface. The
force of friction acting on the box is a constant 20 N. What type of energy does the box have after it
is done being pulled?
A. Elastic
B. Gravitational
C. Chemical
D. Kinetic
The object of the soccer game is to put the____
into the opponent's
Fill in the blank and I’ll give brainly
Answer:
BALL
Explanation:
what is BALL/ SOCCER BALL
Visible light includes all of the
Answer:Visible light is a small part of the electromagnetic spectrum. The spectrum covers everything from gamma rays, x-rays, visible light, infrared, microwave and radio waves. Each part of the spectrum, including the different colors of visible light, have different wavelengths (the space between each wave).
Explanation: