Answer:
t = 1.5 hours
Explanation:
Given that,
Speed of an airplane, v = 560 miles per hour
Distance, d = 840 miles
We need to find the time taken to cover a distance of 840 miles.
[tex]v=\drac{d}{t}\\\\t=\dfrac{d}{v}\\\\t=\dfrac{840}{560}\\\\t=1.5\ h[/tex]
So, the required time is 1.5 hours.
A rain cloud contains 4.2 × 10^5 kg of water vapor. How long would it take for a 4000 W pump to raise the same amount of water to the cloud’s altitude, 3.500 km?
Answer:
it will take 1,000.42 hours to raise the same amount of water.
Explanation:
mass of the water to be raised, m = 4.2 x 10⁵ kg
power applied in lifting the water, P = 4000 W
height through which the water will be lifted, h = 3.500 km = 3,500 m
The power applied the water is given as follows;
[tex]Power = Force \times Velocity\\\\P = FV\\\\P = ma \ \times \ V\\\\P = ma \ \times \ \frac{d}{t} \\\\P = mg \ \times \ \frac{h}{t} \\\\P = \frac{mgh}{t} \\\\t = \frac{mgh}{P} \\\\t = \frac{4.2\times 10^5 \times 9.8 \times 3,500}{4,000} \\\\t = 3,601,500 \ s = 1000.42 \ hours[/tex]
Therefore, it will take 1,000.42 hours to raise the same amount of water.
4. A hockey puck with a momentum of -17 kg x m/s when it
collides with a hockey stick moving at 54 kg x m/s on ice.
Once the objects collide, the hockey puck has a momentum
of 35 kg x m/s, what must the momentum of the hockey
stick be?
Answer:
-2 kg x m/s
Explanation:
-17 + 54 = 35 + x
x = -2
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
A ball with a mass of .012 kg moving at 15.0 m/s collides with a second ball with a mass of 36 g
moving at 5.0 m/s. After the collision, the 12 g ball moves in the same direction at 6.0 m/s. What
is the resulting velocity of the 36 g ball????
Answer:
I dont know this but I have an app for you if your really strangling
Explanation:
its called Qanda. it really good and teachers help you a lot
I really need the answer to this question please
A bowl contained 19.1 grams of salt. Then, Kaitlin poured in another 77.49 grams. How much salt does the bowl contain now?
Assuming that the carbon atom has 6 electrons, what is the total charge of the carbon atom? Is this an ion? Why?
Answer:
Explanation:
Answer is in the photo. I can't attach it here, but I've uploaded it to a file hosting. link below! Good Luck!
How can you separate chalk from
chalky water?
Answer:
Yes
Explanation:
Because the call can evaporate from the water.
Answer:
A centrifuge is utilized to isolated little sums of strong held in suspension from the fluid. For case, chalk from water. The centrifuge contains test-tubes that are spun around at tall speed that causes the strong to sink to the foot of the tube. The fluid is the tapped (poured off) clearing out the strong behind.
Where does internal radiation come from?
☁️ Answer ☁️
Internal radiation exposure hazards result from radioactive material that gets inside the body when you breathe it
Hope it helps.
Have a nice day hyung/noona!~ ￣▽￣❤️
A student wearing frictionless in-line skates on a horizontal surface is pushed by a friend with a constant force of 50.0 N.
How far must the student be pushed, starting from rest, so that her final kinetic energy is 350 J?
Pleaseeeee
Answer:
Distance = 7 meters.
Explanation:
Given the following data;
Force = 50N
Kinetic energy = 350J
To find the distance;
We know that energy possessed by an object over a distance represents the work done by the object.
Mathematically, work done is given by the formula;
Workdone = force * distance
350 = 50 * distance
Distance = 350/50
Distance = 7 meters.
A 1,000 kg car uses a braking force of 10,000 N to stop in 2s. What impulse acts on the car?
Answer:
20,000Ns
Explanation:
Impulse = Ft
I = (10,000)(2)
I = 20,000
Note the mass is extra unnecessary information provided. Vertical components do not affect horizontal motion. The mass would be useful if the car had a friction force.
A lever has a effort force of 5 Newton's and an resistance force of 15 Newton's; what is the mechanical advantage of the lever?
Answer:
3
Explanation:
From the question given above, the following data were obtained:
Effort = 5 N
Resistance = 15 N
Mechanical advantage =?
Mechanical advantage is simply defined as the ratio of the resistance to the effort. Mathematically, it can be expressed as:
Mechanical advantage = Resistance /Effort
With the above formula, we can obtain the mechanical advantage as follow:
Effort = 5 N
Resistance = 15 N
Mechanical advantage =?
Mechanical advantage = Resistance /Effort
Mechanical advantage = 15 / 5
Mechanical advantage = 3
A 10,000 kg train is traveling east at 15 m/s. Calculate the momentum of the train.
Explanation:
p=mv
p=10000×15
p=150,000 kgm/s
In this version of golf the winner is the golfer who wins the greater number of holes. 1.miniature golf
2. match play
3.tournament play
4.stroke play
need answer ASAP
Answer:
Tournament play
Explanation:
A ball starts from rest and reaches a final velocity of 3.3 m/s as it reaches
the bottom of a hill. If it takes 10 s to reach the bottom of hill, what is its
acceleration? *
O 0.25 m/s2
O 0.33 m/s2
O 0.50 m/s2
O 1.33 m/s2
answer
0.33m|s2
Explanation:
v= 3.3m|s
t=10s
[tex]a = v \t[/tex]
=3.3÷10
=0.33m|s2
If a wave with a wavelength of 6.011E-4 m travels 199.0 m in 2.711E-3 s, what is its frequency?
Answer:
erica mitch j sta. maria
How does the circuit breaker works??? Please help
☁️ Answer ☁️
Inside each circuit breaker is a spring hooked over a small piece of solder (a melt-able fusible alloy). Each breaker is connected to an electrical wire that runs through your house. The electricity that flows through your house runs through the solder.
Hope it helps.
Have a nice day noona/hyung!~ ￣▽￣❤️
Answer:
A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.
whose responsibility is it when someone commits a criminal act.
Answer:
police
Explanation:
PLEASE ANSWER
Krishne wants to measure the mass and volume of a key. Which tools should she use?
A. a balance and a beaker of water
B. a balance and a meter stick
C. a beaker of water and a ruler
D. a ruler and a meter stick
Answer:
A balance and a beaker of water!
Explanation:
Krishne wants to measure the mass and volume of a key. The tools that are to be used are – a balance and a beaker of water.
Mass will be represent with the amount of matter that is in an object. This will be measured in terms of kilogram. The mass can easily be measured with balance.
Volume is the quantity of matter that is in the object. This is measured in terms of cubic meter. If you drop the key in a beaker of water, the water inside the beaker will increase and this increases the volume of water that will be equal to volume of key.
What causes the phenomena?
Answer:
Most pneumonia occurs when a breakdown in your body's natural defenses allows germs to invade and multiply within your lungs.
Explanation:
How do you find the volume of a rectangular brick?
Answer:
Multiply the length, width and height of the brick to calculate its volume.
Explanation:
To find the volume of a rectangular brick, you need to multiply its length, width, and height.
The rectangular brick is 400 cubic centimeters (cm³).
The formula to calculate the volume of a rectangular prism (which includes a rectangular brick) is:
[tex]\[ \text{Volume} = \text{Length} \times \text{Width} \times \text{Height} \][/tex]
Let's assume the length of the rectangular brick is 10 cm, the width is 5 cm, and the height is 8 cm. Plugging these values into the formula, we get:
[tex]\[ \text{Volume} = 10 \, \text{cm} \times 5 \, \text{cm} \times 8 \, \text{cm} \][/tex]
Now we can calculate the volume:
[tex]\[ \text{Volume} = 400 \, \text{cm}^3 \][/tex]
Therefore, the volume of the rectangular brick is 400 cubic centimeters (cm³).
Know more about volume:
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. Mass 1 has a momentum of 20 kg*m/s. Mass 2 has a momentum of 50 kg*m/s.
They have a perfectly elastic collision. After the collision, the momentum of Mass
1 is 15 kg*m/s. What is the momentum of Mass 2?
Help please
Answer:
55kgm/s
Explanation:
What defines a mixture?
for sience
8. What is the momentum of a 120-kg professional fullback running
across the line at 11.2 m/s?
Answer:
134r kgm^-1 or 1344 kg /m
Explanation:
Momentum is is given by:
p=mv
Where:
p is momentum, m is mass in kg and v is velocity in ms−1
p=120kg×11.2 m/ s= 1344 kgms=1344kgm^−1
How much of the Moon is always illuminated one time? Explain your answer.
Answer:
50% of it .
Explanation:
50% of it is illuminated by the Sun.
your ____ never changes despite what planet you go to
Answer:
your mass never changes
Your mass never changes despite what planet you go to. Your weight might change, though.
True or False: If a wave's wavelength is short, its frequency is high.
A. True
B. False
I need help please somebody help me
What is created when domains align in certain metals?
Answer:
Generally, magnets are attracted to objects that are made of the metals iron, nickel, or cobalt. These materials are called ferromagnetic materials. ... When all or most of the domains are aligned in the same direction, the whole object becomes magnetized in that direction and becomes a magnet.
Explanation:
How are coal types classified?
color and texture
carbon content and heat value
depth from the surface
sulfur content
Answer:
I believe its B...."Carbon Content and Heat Value"
Explanation:
Coal is classified into four main types, or ranks: anthracite, bituminous, subbituminous, and lignite. The ranking depends on the types and amounts of carbon the coal contains and on the amount of heat energy the coal can produce.
An object accelerates at 32 m/s² when a force of 71 N is applied to it. What is the object’s mass?
Answer:
2.21875 kg
Explanation:
FORCE = MASS x ACCELERATION so to find mass we divide both sides by acceleration. M=F/A
SO 71N/32m/s²=2.21875 kg.
remember N=kgm/s² so m/s² is canceled by m/s² the remaining is kg
The answer is mass= 2.21 kg
The first step is to write out the parameters given in the question
acceleration= 32 m/s²
force-= 71 N
The formula for calculating the object's mass is
mass= force/acceleration
= 71/32
= 2.21 kg
Hence the object's mass is 2.21 kg
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Which of the following are produced by the process of cellular respiration? A. Sugar and carbon dioxide B. Carbon dioxide and water C. Light energy and water D. Carbon dioxide and oxygen
Answer:
B carbon dioxide and water
Your answer should be
B
because of life-sustaining activities