Answer: 3200ml.
Please give brainliest.
Answer:
3200ml
Explanation:
[tex](3.2L)\frac{1000mL}{1L} = 3200mL[/tex]
A rubber duck of volume 2,500cm3 floats in water with 20% of its volume submerged. You want to hold the duck under water so it is at rest and completely submerged. How much force do you have to apply? If you release the duck, what will be its acceleration at that instant?
The force applied to the submerged rubber duck is 4.9 N.
Density of the rubber duck
The density of the rubber duck is calculated as follows;
ρ = S.G x density of water
ρ = 0.2 x 1000 kg/m³
ρ = 200 kg/m³
Force applied to the duckF = mg = (ρV)g
F = (200 x 0.0025) x 9.8
F = 4.9 N
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on earth what is the weight of a large screen tv thas has amass of 75 kg
Answer:
Explanation:
F = mg
F = 75(9.8)
F = 735 N
How much force (in Newtons) is needed to accelerate a 160 kg object at a rate of 4 m/s2?
A. 15
B. 40
C. 640
D. .025
Answer:
C. 640
Explanation:
The minimum force would occur in a frictionless environment and act parallel to any abutting surface.
F = ma = 160(4) = 640 N
Anne pushed a cart by 12 N. How far did the cart move if the work done was 9 J?
[tex]\\ \sf\longmapsto W=Fd[/tex]
[tex]\\ \sf\longmapsto d=\dfrac{W}{F}[/tex]
[tex]\\ \sf\longmapsto d=\dfrac{9}{12}=0.72m[/tex]
Answer:
Anne pushed a cart by 12 N.
● Force = 12 N
Work done is 9 J
● Work = 9 J
=> Work = Force × distance
[tex]=> distance = \frac{work}{force} [/tex]
[tex]=> distance = \frac{9}{2} [/tex]
[tex]=> distance = 0.72m[/tex]
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Over the 10 second period, how far does Juan run?
Answer:
C. 10
Explanation:
On the graph you can see that at the 10 second mark it is at the 10 meters mark as well.
Help me with these questions pleaseeee!
A 5.7 kg block slides along a horizontal surface toward a horizontally mounted spring with a spring constant of 150 N/m. At one instant, the block is 5.0 m from the end of the spring and has a speed of 12.0 m/s. If the surface is frictionless, what is the maximum compression of the spring
Hi there!
We can use the conservation of energy:
Ei = Ef
The initial energy involves kinetic energy while the final energy involves maximum elastic potential energy, so:
1/2mv² = 1/2kx²
We can cancel out the 1/2s for ease of solving:
mv² = kx²
Plug in given values to solve for x:
√(mv²/k) = x
√(5.7)(12²)/(150)) = x
x = 2.339 m
Imagine that you are immersed under a beautiful cosmic meteor shower. Which
instrument would BEST help you view the largest portion of the sky?
refracting telescope
binoculars
sextant
compound telescope
Answer:
binoculars
Explanation: I am taking astronomy
Answer: B) binoculars just took the test
Explanation:
What is three famous people you know
Answer:
Martin Luther King Jr., Mark Zuckerburg, Jeff Bezos
Explanation:
First 3 people to come to my head.
Is the answer 0.055 seconds? (Only problem 13)
Answer:
155÷8.5
=18.235294117647
Question 1
A) Which sentence about galaxies provides evidence of universe expansion that supports the Big Bang Theory?(1 point)
Galaxies are moving away from each other.
Galaxies are in constant motion.
Galaxies are moving at different speeds and in different directions.
Galaxies are moving more slowly than they have in the past.
Question 2
A) Which provides evidence of universe expansion that supports the Big Bang Theory? Select the three correct answers.(2 points)
The temperature of the universe is increasing.
An enormous amount of weak background radiation has been detected in the universe.
The temperature of Cosmic Microwave Background radiation varies widely from one part of the universe to another.
Galaxies are moving away from each other.
The temperature of the universe is decreasing.
The universe is undergoing a cycle of contraction and expansion.
Question 3
A) Which is evidence of universe expansion that supports the Big Bang Theory?(1 point)
The temperature of the universe has cooled and warmed repeatedly over time.
The temperature of the universe has warmed over time.
The temperature of the universe is the same as it was at the time of the Big Bang.
The temperature of the universe has cooled over time.
The characteristics of the Big Bang allow you to find the correct answers for the different questions are:
1. The galaxies are moving away from each other.
2. There is a large amount of weak background radiation in the universe
The galaxies are moving away from each other The temperature of the universe is decreasing3. The temperature of the universe has cooled over time
The Big Bang model says that initially the universe was born from a great initial explosion about 14 10⁹ years ago, with this idea several facts arise:
The galaxies after their formation must be in a constant expansion There must be an energy in the entire universe remaining from the big explosion As the energy is constant, the energy per unit volume must decrease, consequently the temperature of the universe must be decreasing.
Let's apply these ideas to the different questions, to find the correct answers.
1) What phrase about galaxies provides evidence of the expansion of the universe proposed by the Big Bang
the correct answer is:
The galaxies are moving away from each other.
As there is no friction, the initial forces create a speed in the galaxies, therefore they must move away from each other at this speed
2) What phrases give evidence of the expansion of the universe
the correct answer is:
There is a large amount of weak background radiation in the universe The galaxies are moving away from each other The temperature of the universe is decreasing
3) What evidence of expansion
The temperature of the universe has cooled over time
In conclusion with the characteristics of the Big Bang we can find the correct answers for the different questions are:
1. The galaxies are moving away from each other.
2. There is a large amount of weak background radiation in the universe
The galaxies are moving away from each other The temperature of the universe is decreasing3. The temperature of the universe has cooled over time
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Children start to gain control over their attention beginning in preschool. This control is related to a growth
spurt in the brain's lobe.
Answer:
occipital parietal
Explanation:
Hope this helps, plus I took the test
An apple falls from a tree and 2.5 seconds later hits the ground. How fast is the apple falling when it hits the ground? Neglect air resistance.
O 2.5
05
O 20
0 25
Answer:
9.8 m/s²Explanation:
Since the ball rises for 2.5 s, the time to fall is 2.5 s. The acceleration is 9.8 m/s2 everywhere, even when the velocity is zero at the top of the path. Although the velocity is zero at the top, it is changing at the rate of 9.8 m/s² downward.please answer me!!! asappp
Answer:
omg this is hard
Explanation:
Yes it is lol
A skier accelerates to a speed of 56 m/s over a distance of 151 m. Determine the acceleration (assume uniform) of the skier.
Show your work for acceleration.
Include Units
The acceleration of the skier over the distance traveled is 10.38 m/s²
The given parameters;
Initial velocity of the skier, u = 56 m/sDistance covered by the skier, s = 151 mAcceleration is defined as the change in velocity per change in time of motion.
The magnitude of the acceleration of the skier is calculated as follows;
[tex]v^2 =u^2 - 2as\\\\[/tex]
where;
v is the final velocity at the end of 151 m = 0
[tex]0 = 56^2 -(2\times 151)a\\\\302a = 3136\\\\a = \frac{3136}{302} \\\\a = 10.38 \ m/s^2[/tex]
Thus, the acceleration of the skier over the distance traveled is 10.38 m/s²
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i need working steps and answers
Explanation:
I will definitely explain you if you follow me please
bus travels 6 km east and then 8 km south. What is the displacement?
Answer:
d = √(6² + 8²) = 10 km
Explanation:
displacement is a vector and subject to vector addition.
Researchers believe _____ helps strengthen and enhance long-term memory formation.
A. hypnosis
B. sleep
C. dreaming
D. meditation
Researchers believe that sleep helps strengthen and enhance long-term memory function. Hence, option B is correct.
What is Meditation?Meditation could be thought of as a series of practices that encourage enhanced awareness and focused attention. Meditation is a different way to change awareness that has been shown to have several benefits for psychological well-being.
To feel refreshed and alert when you get up, sleep is a crucial process that allows your body and mind to heal. The body needs adequate sleep to remain healthy and free of disease. Without enough sleep, the brain cannot work efficiently. This may affect your ability to concentrate, think clearly, and process memories.
That's the reason researchers believe that sleep help in enhancing longer memory function.
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A driver spotted a police car and he braked from a speed of 100 km/h to a speed of 80 km/h during a displacement of 88 m at a constant acceleration? What is that acceleration, and how much time is required for the given decrease in speed?
Answer:
Explanation:
100 kph = 27.8 m/s
80 kph = 22.2 m/s
v² = u² + 2as
a = (v² - u²) / 2s
a = (22.2² - 27.8²) / (2(88))
a = -1.578282828...
a = -1.58 m/s²
t negative sign means the acceleration opposes the initial velocity.
t = Δv/a
t = (22.2 - 27.8) / -1.57828
t = 3.52 s
A canoe is designed to have very little drag when it moves along its length. Riley, mass 62 kg, sits in a 21 kg canoe in the middle of a lake. She dives into the water off the front of the canoe, along the axis of the canoe. She dives forward at 1.7 m/s relative to the boat.
1) Just after her leap, how fast is she moving relative to the water?
2) Just after her leap, how fast is the canoe moving relative to the water?
(1) Riley velocity relative to the water after she jumps is 1.7 m/s.
(2) The velocity of the canoe relative to the water is 5.02 m/s.
The given parameters;
mass of Riley, m₁ = 62 kgmass of canoe, m₂ = 21 kg velocity of the Riley after jumping, v₁ = 1.7 m/s(1) Since the lake is still, her velocity relative to the water after she jumps is 1.7 m/s.
(2) Apply the principle of conservation of linear momentum;
m₁v₁ = m₂v₂
62 x 1.7 = 21v₂
105.4 = 21v₂
[tex]v_2 = \frac{105.4}{21} \\\\v_2 = 5.02 \ m/s[/tex]
Thus, after her leap, the velocity of the canoe relative to the water is 5.02 m/s.
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Write down the units for the following physical quantities:
a. Velocity
b. Acceleration
c. Momentum
d. Force
e. Power
f. Energy
g. Pressure
In the free-body diagram, what is the net force? (Hint-Trig.- SOH-CAH-TOA)
a. 35 N right
b. 28 N right
c. 75 N
Suppose that John lives on a square block that is 180 yards per side, and in the evenings, he walks with his dog around the block for a little exercise.
A) If John walks once around the block, what distance does he travel?
B) If John walks once around the block, what is his final displacement?
Answer:
It's A
Explanation:
Although I'm not sure about the second one, I'm sure the first one is A
Write the number below in scientific notation, 35,600 O A. 3.56 x 103 O B. 3.56 x 103 O C. 3.56 x 104 O D. 3.56 x 105
hi i think it 573 udaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Answer:
ummm I didn't understand the question
Describe the procedure of using pani ghatt
Answer:
The water from head of 20m or above is brought in open or closed conduit. Traditionally wooden blades are used as turbine on which water jets are strike upon, jets rotates the bigger wheel mounted on smaller wheel. There is continuos feed of grains in between grinds into finer particles.
A 20-ohm resistor is connected to a 10 V battery. The 20-ohm resistor is replaced with a smaller resistor. What happens to the voltage across the resistor?
Explanation:
It is given that,
Resistance, R = 20 ohms
Voltage of the battery, V = 10 V
We can find current flowing through the circuit using Ohm's law as follows :
V = IR
\begin{gathered}I=\dfrac{V}{R}\\\\I=\dfrac{10}{20}\\\\I=0.5\ A\end{gathered}I=RVI=2010I=0.5 A
It can be seen from the Ohm's law, that the current is directly proportional to the voltage. It means that if the battery is replaced by a battery that provides a larger voltage, the current through the circuit will be more than 0.5 A i.e. it increases
If a pool and a cup of water had the same temperature, which would have greater thermal energy?Why?
Despite being the same temperature, the swimming pool is a much larger thermal energy store than the beaker of water.
What is thermal energy?Thermal energy is the energy contained within a system that controls its temperature. The flow of thermal energy is defined as heat.
Thermodynamics is a branch of physics that deals with how heat is transferred between different systems and how work is done in the process.
Thermal energy sources include natural gas, coal, and oil, as well as solar, heat pump electric, and geothermal heat.
A swimming pool and a beaker of water can both be the same temperature.
Despite being the same temperature, the swimming pool contains significantly more thermal energy than the beaker of water. A heated swimming pool's thermal store contains a lot of energy.
Thus, If a pool and a cup of water had the same temperature, then swimming pool has a much larger thermal energy.
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how do sound waves behave as a solid
a. they travel faster in a solid than other mediums
b. they travel slower in a solid than other solids
c. they stop when they hit a solid
d.sound waves behave the same in any medium
Answer:
A. They travel faster in a solid than other mediums
Explanation:
Sound waves travel faster in solids because the density of solids is higher than that of liquids which means that the particles are closer together and sound can be transmitted more easily.
When you view the pendulum’s swing, it shows that at the very top of the swing KE = 0. What does that tell you about the pendulum’s motion at that point?
it tells you that it has a lot of force
Answer:
Since I couldn't find the other answers to the same question, I wrote the wrong answer to help ya'll get the sample response. So here's from Edge
Explanation:
Sample Response: If KE = 0, the pendulum is not moving. At the top of the swing, the pendulum must stop for a brief moment.