Answer:
self perception
Explanation:
i think its self perception because he tells to others
A 1500 kg car has an applied forward force of 5000 N and experiences an air resistance of 1250 N. What is the car's acceleration?
Answer:
[tex]2.33\ m/s^2[/tex]
Explanation:
Net Force
According to the second Newton's law, the net force exerted by an external agent on an object of mass m is:
Fn = m.a
Where a is the acceleration of the object. The net force is the sum of the individual vector forces applied to the object.
The m=1500 Kg car has two horizontal forces applied: the forward force of 5000 N that causes the movement and the air resistance force of 1250 N that opposes motion.
The net force is Fn = 5000 N - 1500 N = 3500 N
To find the acceleration, we solve the equation for a:
[tex]\displaystyle a=\frac{Fn}{m}[/tex]
[tex]\displaystyle a=\frac{3500}{1500}[/tex]
[tex]\boxed{a = 2.33\ m/s^2}[/tex]
The car's acceleration is [tex]a = 2.33\ m/s^2[/tex]
What is true about the atom? Select all that are correct.
Is made up of protons, neutrons and electrons
Make up the matter in the universe
Are found in nonliving matter only
Is found only on Earth
a is about the same size as a cell
Smallest unit of matter that keeps its chemical properties
Answer: Is made up of protons, neutrons and electrons
Make up the matter in the universe
Smallest unit of matter that keep its chemical properties
The orange-spotted filefish lives in coral reefs. Warming ocean temperatures have caused coral reef destruction, causing the filefish population to rapidly decline. (2 causes) Habitat Loss Habitat Loss Invasive Species Invasive Species Pollution Pollution Population Growth Population Growth Climate Change Climate Change Overharvesting Overharvesting
Answer:
Pollution
Climate change
Explanation:
The destruction of the coral reef can be attributed to pollution and climate change.
The pollution of the atmosphere by greenhouse gases such as carbon dioxide causes the average temperature of the planet to increase, a phenomenon that is referred to as global warming. Global warming also causes an increase in the temperature of sea waters which can lead to the death of microscopic algae, causing coral bleaching.
An increase in the concentration of carbon dioxide in the atmosphere also causes ocean acidification which, in turn, reduces the availability of materials required to form the calcium carbonate of the coral reef. In extreme cases, acidification of the ocean can cause the dissolution of the coral skeletons.
Calculate the mass of a planet that exerts a 1.5 X 10 13 N force on a 5.4 x 10
30
kg star
O 6.67 X 10 3 kg
O 1.07 X 10 15 kg
O 1.00 X 10 17 kg
O 1.30 X 10 45 kg
Answer:
umm I also need help sorry
Explanation:
help..
Answer:
1.07 X 10^15 kg
Explanation:
What a measurement? Write down t its importance inn an our daily life.
Answer:
Time, size, distance, speed, direction, weight, volume, temperature, pressure, force, sound, light, energy—these are among the physical properties for which humans have developed accurate measures, without which we could not live our normal daily lives. Measurement permeates every aspect of human life.
A container with a mass of 5 kg is lifted to a height of 8 m. How much work is done by the gravitational force
Answer:
work done=392J
Explanation:
work done =Mgh
DATA
M=5kg
g= 9.8
h=8m
W=Mgh
W=5*9.8*8
W=392J
The work done by the gravitational force is equal to -400 J.
What is gravitational force?The gravitational force can be described as a force that attracts a body towards the center of the earth or any physical object that has mass. Every object has mass and exerts a gravitational pull on another object with mass.
Given, the mass of the container, m = 5 Kg
The height from the ground level, h = 8 m
The work done can be calculated by using the below-mentioned formula:
[tex]W = m\times g\times h[/tex]
Where g is the gravitational acceleration.
As the container is lifted in the upward direction therefore the value of the g will be negative.
Substitute the values of m, g, and h in the above formula:
W = 5 × (-10) × 8
W = -400 J.
The negative sign shows that the work is done against the gravitational force.
Therefore, the work done by the gravitational force is equal to -400 J.
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It takes serina 0.25 hours to drive to school. Her route is 16km long . What is serina’s average speed on her drive to school
Explanation:
distance=16km=16000m
time=0.25hours=1/4hr=15min=900sec
speed=dist./time
=16000/900=160/9=17.777m/s
speed=17.78m/s (rounded)
Answer:
64
Explanation:
Avg. speed = total distance/total time
Avg. speed= 16km/0.25h
Avg. speed= 64km/h
Which of the following is the minimum amount of work done by a hydraulic lift
to raise a 150-kg aluminum block 2.0 m vertically?
Answer: 300 J
Explanation:
Force = 150 KJ
Distance = 2.0 m
The minimum amount of work done by a hydraulic lift to raise a 150-kg aluminum block 2.0 meters vertically would be 2940 Joules, as the work done is the product of the force applied to the displacement of the object, therefore the correct answer is option B.
What is work done?The total amount of energy transferred when a force is applied to move an object through some distance
The work done is the multiplication of applied force with displacement.
Work Done = Force × Displacement
As given in the problem we have to find out the minimum amount of work done by a hydraulic lift to raise a 150-kg aluminum block 2.0 meters vertically.
The minimum work done = 150 × 9.8 × 2
= 2940 Joules
Thus, The minimum amount of work done by a hydraulic lift to raise a 150-kg aluminum block 2.0 meters vertically would be 2940 Joules.
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Yuna is writing an opinion piece about her Schools lunch menu which text structure would best Express her ideas check all that apply
Answer:
Cause and effect, problem and solution, order of importance, comparison and contrast.
Explanation:
A car slows from 22 m/s to 3.0 m/s at a constant rate of 2.1 m/s2. How many seconds are required before the car is traveling at a forward velocity of 3.0 m/s?
Answer: 9.05 s
Explanation: v = u +at
v = 3 m/s
u = 22 m/s
Deceleration = 2.1 m/s^2
∴ 3 = 22 - 2.1 ( t )
∴ t = 9 .05 s
For an object to have potential energy it must be...?
A) At rest
B) Light weight
C) Moving
D) Elevated (height)
Please I need help, thank you!
A car is traveling with 90km/hr and another car with 20m/s in opposite direction. Calculate the relative velocity.
Answer:
Vba = -20 m/s - 25 m/s = -45 m/s
Vab = 25 m/s + 20 m/s = 45 m/s
Explanation:
Relative Velocity
The relative velocity of object B with respect to object A (Vba) measures the velocity of B in the rest frame of object A.
It's calculated as:
Vba = Vb - Va
The velocity of car B is Vb=-20 m/s and the velocity of car A is Va=90 Km/h.
Converting Va to m/s:
Va = 90 Km/h * 1000/3600 = 25 m/s
Thus, the relative velocity of B with respect to A is:
Vba = -20 m/s - 25 m/s = -45 m/s
And the relative velocity of A with respect to B is:
Vab = 25 m/s + 20 m/s = 45 m/s
what angle is formed by the sun, earth, and moon during an eclipse?
A.180 degree
B.270 degree
C.90 degree
D.45 degree
The air around a pool and the water in the pool receive equal amounts of energy from the sun. Why does the air experience a greater increase in temperature than does the water?
A.
The specific heat of water is less than that of air.
B.
The specific heat of water is greater than that of air.
C.
The latent heat of water is less than that of air.
D.
The latent heat of water is greater than that of air.
Answer:
A
Explanation:
The correct answer is; The specific heat of water is greater than that of air.
The specific heat capacity of a substance is defined as the quantity of heat required to raise the temperature of a unit mass of that substance by 1°C.
The higher the specific heat capacity of a substance, the higher the energy required to raise its temperature by 1°C.
Water has a very high specific heat capacity compared to air therefore when air around a pool and the water in the pool receive equal amounts of energy from the sun, the air experiences a greater increase in temperature than does the water.
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Erin was asked to design an experiment that would give the evidence needed to support the hypothesis: “A 6 inch playground ball will bounce higher than a 3 inch playground ball, because it is bigger.” Which of the following statements would not be a part of Erin’s experiment?
Determining all of the variables.
Repeating her experiment 5 times.
Recording her results as well as her observations.
Dropping the balls from different heights.
Which cell structure is found in plant cells, but not in animal cells?
Answer:
Cell wall and chloroplasts (only for leaves)
Explanation:
All plant cells have cell walls to give the cell a fixed shape but animal cells do not have cell walls. Some cells like leaf cells have chloroplasts to make their own food for the plant while animal cells do not have chloroplasts.
a force that pushes a small mass will have _ effect on the acceleration than that same force pushing on na large mass
A. greater
B. smaller
C. same
Answer:
a
Explanation:an example An astronaut in space has the same mass as he does on earth while having different ... Newton's Second Law of Motion: Force = mass x acceleration ... Push less to move it (use less force.) ... Gravity has an effect on an object in the vertical direction only.
Answer:
it is a greater
Explanation:
hope it helps
question in the photo
What is the mass of an object that accelerates at 5 m/s2 when pushed with 100 N?
Answer:
the answer is 20g
Explanation:
Data:
acceleration:5m/s2
force:100N
mass:?
solution:
force: mass*acceleration
mass: force divided by acceleration
mass:100/5
mass:20g
or another way of solving it is
force: mass*acceleration
100:mass*5
100/5 : mass
20g:mass
A runner exerts a net force of 335 n to accelerate at a rate of 2.5 m/s what is the runners mass
please answer asignment due today
Answer:
Give me some time okkkk
A ball is released out a window that is 13 m above the ground. How fast will the ball be traveling when it reaches the ground?
A. 32 m/s
B. 0.26 km/s
C. 0 m/s
D. 16 m/s
Answer:
Option D. 16 m/s
Explanation:
From the question given above, the following data were obtained:
Initial velocity (u) = 0 m/s
Height (h) = 13 m
Acceleration due to gravity (g) = 9.8 m/s²
Final velocity (v) =?
We can determine how fast (i.e final velocity) the ball is traveling when it reaches the ground as illustrated below:
v² = u² – 2gh
v² = 0² – (2 × 9.8 × 13)
v² = 0 – 254.8
v² = 254.8
Take the square root of both side.
v = √254.8
v = 15.96
v ≈ 16 m/s
Thus, the ball is travelling with a velocity of 16 m/s when it reaches the ground
I WILL GIVE U 100 POINTS IF U ANSWER THIS AND GET IT RIGHT!!!!!!!!!!!!!!
Answer:
Free points That's awesome Thanks Brainly User!
Explanation:
How does the number of batteries affect the strength of an electromagnet?
Answer:
The answer is below
Explanation:
It has been observed that the strength of electromagnets is based on the electrical current passing through their wires.
However, the number of batteries can affect the strength of electromagnets if only the electromagnet's resistance is what's hindering the current.
This can be observed when multiple batteries are connected thereby increasing the degrees of voltage across the electromagnet.
When an object moves, where does the energy come from?
Answer:
Kinetic energy.
Explanation:
This is the energy of motion, observable as the movement of an object or subatomic particle. Every moving object and particle have kinetic energy.
why is physics to study the heat absorbed by the ocean
Answer:
Heat is a source of energy
Explanation:
Just took the test
A train travels with a speed of 115km/hr. How much time does it take to cover a distance of 470km.
It would take approximately 4 hours for the train to cover a distance of 470km.
4 hours 5 minutes 13.04 seconds
a squirrel runs at a speed of 9.9 m/s with 25 J of kinetic energy
What is the squirrels mass
Answer:
yeet yeet yeet yeet
Explanation:
Kinetic energy (K.E):-
So, the Mass of the Squirrel is 0.51 Kg (or) 510 grams.
A squirrel runs at a speed of 9.9 m/s with 25 J of kinetic energy.
What is the squirrel’s mass?
Answer: 0.51 kg
How much work is required to lift a 500 kg block 12 m? (Show work)
The required work done will be "6000 kg-m".
Work and energy:Work would be defined as an object's displacement whenever a force would be exerted to that as well, whereas energy is defined as the capacity to accomplish the work.
This then exists throughout a variety of forms, including potential, kinetic, biochemical, thermodynamic, nuclear, as well as direct current.
According to the question,
Mass, m = 500 kg
Distance, d = 12 m
We know the formula,
→ Work = Force x Distance
or,
→ W = F x D
By substituting the given values in the above formula, we get
= [tex]500\times 12[/tex]
= [tex]6000[/tex] kg-m
Thus the above answer is correct.
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An illustration of a ball sitting at the top of a hill of height labeled h Subscript 1 Baseline = 2 m. A the the bottom of the hill it levels off and the leveled surface is at a height labeled h Subscript 2 Baseline = .5 m. A ball is released from the top of a hill. How fast is the ball going when it reaches the base of the hill? Approximate g as 10 m/s2 and round the answer to the nearest tenth. m/s
Answer:
5.5 m/s
Explanation:
Right on Edge
The statement explains the importance of enzymes that check for and repair mistakes during DNA replication is the enzymes prevent many genetic mutations from being expressed. Thus, the option C is correct.
What is RNA polymerase?RNA polymerase is an enzyme that aids in the transcription of DNA into RNA during transcript in the nucleus. The enzymes prevent many genetic mutations from being expressed.
Primase is an enzyme that synthesizes short RNA sequences called primers. These primers serve as a starting point for DNA synthesis during replication as the DNA polymerases cannot begin the synthesis of the new strand, they only extend it after primase begins it and primase produces RNA molecules, the enzyme can be said to be a type of RNA polymerase.
Therefore, The statement explains the importance of enzymes that check for and repair mistakes during DNA replication is the enzymes prevent many genetic mutations from being expressed. Thus, the option C is correct.
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