Explanation:
Given:
v₀ = 0 m/s
a = 3 m/s²
t = 4 s
Find: Δx and v
Δx = v₀ t + ½ at²
Δx = (0 m/s) (4 s) + ½ (3 m/s²) (4 s)²
Δx = 24 m
v = at + v₀
v = (3 m/s²) (4 s) + 0 m/s
v = 12 m/s
what is the spring constant for a spring if pulling it back .0391m causes a force in the opposite direction of .922N?
-0.361N
.361N
-2.36N
2.36N
Answer: correct me if i'm wrong but is it 0.361N
Name three examples of vortices.
don't lie or else ill report
Answer:
The solutions found include vortex rings, bounded vortices attached to the sphere and infinite vortex tubes.
Explanation:
Write an equation of the line in slope-intercept form.
Please explain.
Answer:
y = [tex]-\frac{1}{4}[/tex]x + 3
Explanation:
The equation of a straight line is given as:
y = mx + c
y and x are the coordinates
m is the slope
c is the y -intercept
The y-intercept = 3;
Slope = [tex]\frac{y_{2} - y_{1} }{x_{2} - x_{1} }[/tex]
x₁ = 0
x₂ = 4
y₁ = 3
y₂ = 2
Slope = [tex]\frac{2-3}{4 -0 }[/tex] = [tex]-\frac{1}{4}[/tex]
y = mx + c
y = [tex]-\frac{1}{4}[/tex]x + 3
hey guys, l need some help! what is the weight of potatoes of mass 75 kg on the surface of the earth? (g=9.8m/s square) ans=735N l need process
Answer:
735N
Explanation:
Weight is a measurement of force.
F = Force
m = mass
a = acceleration
F = m*a
F = 75kg*9.8m/s²
F = 735N
A man has a mass of 66 kg on Earth. What is his weight in Newtons?
Answer:
answer is 66 kilograms-force = 647.2389 newtons
Explanation:
Answer:
[tex]\boxed {\boxed {\sf 646.8 \ Newtons }}[/tex]
Explanation:
Weight in Newtons can be found by multiplying the mass times the acceleration of gravity.
[tex]W=m*g[/tex]
The mass of the man is 66 kilograms on Earth.
Earth has an acceleration of gravity that is 9.8 meters per square second.
[tex]m= 66 \ kg \\g=9.8 \ m/s^2[/tex]
Substitute the values into the formula.
[tex]W=66 \ kg *9.8 \ m/s^2[/tex]
Multiply.
[tex]W=646.8 \ kg*m/s^2[/tex]
1 kg * m/s² is equal to 1 Newton, therefore our answer of 646.8 kg *m/s² is also equal to 646.8 Newtons, or N.
[tex]W=646.8 \ N[/tex]
The man's weight in Newtons in 646.8 Newtons.
7. A complex arrangement of pulleys forms what is called the block in a block
and tackle. The rope used to lift the pulleys and the load is the tackle. A block
and tackle is used to lift a truck engine, which weighs nearly 7,406 N. The
force required to lift this weight using the block and tackle is 308.6 N. What is
the mechanical advantage of the block and tackle?
Answer:
24
Explanation:
Given parameters:
Load = 7406N
Effort = 308.6N
Unknown:
The mechanical advantage of the block and tackle system = ?
Solution:
Mechanical advantage is the ability of a simple machine to amplify or increase the force needed to do work.
Mathematically;
M.A = Output force / Input force
Output force = Load
Input force = Effort
M.A = 7406N / 308.6N = 24
The mechanical advantage is 24
How does changing the initial mass of the copper affect how much heat energy it has?
Answer:
Increasing the temperature of the copper made the final temperature increase and decreasing the temperature of the copper made the final temperature decrease. ... How does changing the initial mass of the copper affect how much heat energy it has? The more copper, the more heat energy.
Explanation:
Decreasing the temperature of the copper made the final temperature decrease. But the mass remains constant.
What is heat energy?Heat is energy that is transmitted from one body to another as a result of a temperature differential. When two bodies of different temperatures come into contact,
Thermal expansion is the tendency of matter to alter its form, area, volume, and density in response to a change in temperature.
Thermal expansion is caused by heating. The mass remains constant. The loudness rises. As a result, the density drops.
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The diagram below shows the velocities of two runners.
11 m/s west
Runner 1
5 m/s east
Runner 2
From the frame of reference of runner 1, what is the velocity of runner 2?
O A. 5 m/s east
O B. 6 m/s east
C. 16 m/s west
O D. 16 m/s east
Answer : 16 m/s east
Explanation: Trust the process!!
From the frame of reference of runner 1, the velocity of runner 2 will be D) 16 m/s east
What is relative velocity ?
The relative velocity is defined as the velocity of an object with respect to another observer
When two bodies are moving in opposite directions , relative velocity get added and if bodies are moving in same direction , relative velocity will get subtracted .
From the frame of reference of runner 1, the velocity of runner 2 will be
v (relative) = v1 + v1
v1 = velocity of runner 1 = 11m/s west
v2 = velocity of runner 2 = 5m/s
v = 11 + 5 = 16 m/s
correct answer will be O D. 16 m/s east as runner 2 is running in east direction
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What happens to the gravitational force between two objects as the bodies become closer to each other? A. The gravitational force begins to repel the objects. B. The gravitational force increases. C. The gravitational force decreases. D. The gravitational force stays the same.
Answer:
Explanation:
The gravitational force between two objects becomes weaker if the two objects are moved apart and stronger if they are brought closer together; that is, the force depends on the distance between the objects.
The gravitational force between two objects as the bodies become closer to each other increases.
Gravitational force is force of attraction between two masses. Gravitational force(F) between two bodies is directly proportion to the product of masses(m₁,m₂) of two bodies and inversely proportional to square of distance(r) between them. mathematically it is written as,
F ∝ m₁.m₂
F ∝ 1/r²
F = G m₁,m₂÷r²
where G is gravitational constant, whose value is 6.6743 × 10⁻¹¹ m³ kg-1s⁻².
Force is expressed in Newton N in SI unit. its dimensions are [M¹L¹T⁻²].
As distance decreases the Force increases
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Why is physics worth knowing about
Answer:
Physics can help you in your everyday life.
Explanation:
It can also help you in life treating situations.
Adhira loves to ride her bike around the neighborhood. She starts riding 1.2 miles at 30° S of E. Then, she rides another 2.0 miles at 20° W of S. Next, she rides 1.6 miles at 30° S of W. And finally, she rides 2.6 miles at 15° W of N. What is her final displacement from her starting point?
Answer:
D = 1.8677 miles , θ = 24.28º at South of West
Explanation:
This is an exercise in adding vectors, the easiest way to solve them is to decompose the vectors and add each component algebraically. Let's use trigonometry
first displacement. d = 1.2 miles to 30º south of East
cos ( 360-30) = cos (-30) = x₁ / d
sin (-30) = y₁ / d
x₁ = d cos (-30)
y₁ = d sin (-30)
x₁ = 1.2 cos (-30) = 1,039 miles
y₁ = 1.2 sin (-30) = -0.6 miles
second shift. d = 2.0 miles to 20º West of South
cos (270-20) = x₂ / d
cos (250) = y₂ / d
x₂ = 2.0 cos 250 = -0.684 miles
y₂ = 2.0 sin250 = -1.879 miles
Third displacement. d = 1.6 miles to 30º South of West
cos (180 + 30) = x₃ / d
sin (210) = y₃ / d
x₃ = 1.6 cos 210 = -1.3856 miles
y₃ = 1.6 sin 210 = -0.8 miles
Fourth displacement. d = 2.6 miles to 15º West of North
cos (90 + 15) = x₄ / d
sin (105) = y₄ / d
x₄ = 2.6 cos 105 = -0.6729 miles
y₄ = 2.6 sin 105 = 2,511 miles
having all the components we add
x-axis (West-East direction)
X = x₁ + x₂ + x₃ + x₄
X = 1.039 -0.684 - 1.3846 - 0.6729
X = -1.7025 miles
Y = y₁ + y₂ + y₃ + y₄
Y = -0.6 -1.879 -0.8 +2.511
Y = -0.768
The modulus of this displacement is we use the Pythagorean theorem
D = √ (X² + Y²)
D = √ (1.7025² + 0.768²)
D = 1.8677 miles
let's use trigonometry to find the direction
tan θ = Y / X
θ = tan⁻¹ Y / x
θ = tan⁻¹ (0.768 / 1.7025)
θ = 24.28º
as the two components are negative this angle is in the third quadrant
therefore in cardinal direction form is
θ = 24.28º at South of West
the faster particles move the less kinetic energy they have true or false
Answer:
False
Explanation:
You get more kinetic energy the more the particles and less kinetic energy with less particles
Create an acronym using the word IGNEOUS.
I Guess Nobody Enjoys Odd Unicorn Shirts
2) A car is towed by a horizontal rope at a constant speed.
draw the free body diagram
Answer:
\
\
\
Explanation:
what is the unit measurement of the surface? physics
Answer:
square metre is the answer
Explanation:
Hope this helps u
Crown me as brainliest:)
HELP PLEASE
A load is a device that changes electrical energy into other forms of energy. Which load converts electrical energy into thermal energy by passing an electric current through a high-resistance material?
A.
Hand-powered generator
B.
Toaster
C.
Fan
D.
Electrical drill
Answer:
A toaster because you plug it up for electric energy and heat to toast it
A windshield hits a bug with force of 10 N.
What force does the bug hit the windshield?
Explain using Newton's third law.
A ball is thrown horizontally with an initial
velocity of 20 m/s from the top of a tower
60 m high. What is the initial vertical
velocity of the ball?
a. O m/s
b. 20 m/s
c. 3.5 m/s
d. 9.81 m/s
The initial vertical velocity of a ball thrown horizontally with an initial velocity of 20 m/s from the top of a 60 m high tower is 0 m/s (option a).
The ball is thrown horizontally, so its velocity will have only components in the x-direction (horizontal). The components of the initial velocity in the y-direction (vertical) will be zero.
For a ball's velocity to have components in the vertical and horizontal direction, the ball must be thrown at a certain angle to the ground, describing a parabolic movement.
In a parabolic movement, the vertical and horizontal components of the velocity would be:
[tex] v_{x} = v_{i}cos(\theta) [/tex]
[tex] v_{y} = v_{i}sin(\theta) [/tex]
Where:
[tex] v_{i} [/tex]: is the initial velocity
θ: is the angle
Therefore, the initial vertical velocity of the ball is zero (option a).
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Unit 2 kinetic energy mastery test
Answer: kinetic energy is Energy of motion.
Explanation:
Which Box in the diagram above, should this picture go into?
Box A
ООО
O Box B
O Box C
Plzz answerr idk
The mass of the sun is 1.9891030 kg and the mass of the Earth is 5.9721024kg. If the Earth’s acceleration toward the sun is 0.0059 m/s/s, what is the sun’s acceleration toward the Earth?
Answer:
this is the answer according to my calculations
Explanation:
0.001.9
What is the force on a person’s hand, which is using a rope to accelerate a 5 kg block upward with an acceleration of 2.2 m/s 2 ?
Answer:
F = 11 N
Explanation:
Given,
Mass of a block, m = 5 kg
Acceleration of the block, a = 2.2 m/s²
We need to find the force on the person's hand. Let it is F. We know that force is given by the product of mass and acceleration as follows :
F = ma
F = 5 kg × 2.2 m/s²
F = 11 N
So, the force on a person's hand is 11 N.
A 3.0\, \text {kg}3.0kg3, point, 0, start text, k, g, end text box is at rest on a table. The static friction coefficient \mu_sμ s mu, start subscript, s, end subscript between the box and table is 0.400.400, point, 40, and the kinetic friction coefficient \mu_kμ k mu, start subscript, k, end subscript is 0.100.100, point, 10. Then, a 10\,\text N10N10, start text, N, end text horizontal force is applied to the box. What is the best estimate of the magnitude of the box’s acceleration?
Answer:
its 0 m/s^2 on khan
Explanation:
usually how i think of it if its below 15 N then its 0
Answer:
5.3m/s^2
Explanation:
:)
What is the weight, on Earth, of a book with a mans of 1.5 kg?
15N
66N
11 3N
14,7N
Amy crashed her bike into the fence. She was thrown over it onto the lawn. Which Newton law applies
Answer:
Newton's First Law of Motion applies here.
Explanation:
Before crashing into the fence, Amy was moving at a certain speed on her bike. As, she crashed her bike into the fence, the collision stopped the bike suddenly. But, Amy had the same speed due to inertia of her body. Due tot his speed Amy did not stop and she was thrown over the fence onto the lawn. So, the force of inertia of Amy's body caused her to be overthrown in this case. We study about inertia in Newton's First Law of Motion, which is also known as Law of Inertia.
Newton's First Law of Motion applies here.
A. A land speed car can decelerate at 9.8m/s. How long does it take the car to come to a complete stop from a run of 885 km/hr (245.8 m/s)
TYPE ANSWER HERE
B. How far does the land speed car travel while stopping?
TYPE ANSWER HERE
C. What is the average acceleration of an object that reaches a speed of 600 m/s in a distance of 0.6 m?
TYPE ANSWER HERE
Answer:
A. 25.08 s
B. 3082.53 m
C. 3×10⁵ m/s²
Explanation:
A. Determination of the time.
This can be obtained as illustrated below:
Acceleration (a) = –9.8 m/s²
Initial velocity (u) = 245.8 m/s
Final velocity (v) = 0 m/s
Time (t) =.?
v = u + at
0 = 245.8 + (–9.8 × t)
0 = 245.8 – 9.8t
Collect like terms
0 – 245.8 = – 9.8t
– 245.8 = – 9.8t
Divide both side by –9.8
t = –245.8 / –9.8
t = 25.08 s
Therefore, it will take 25.08 s for the car to come to a complete stop.
B. Determination of the distance travelled by the car.
Acceleration (a) = –9.8 m/s²
Initial velocity (u) = 245.8 m/s
Final velocity (v) = 0 m/s
Distance (s) =?
v² = u² + 2as
0² = 245.8² + (2 × –9.8 × s)
0 = 60417.64 – 19.6s
Collect like terms
0 – 60417.64 = – 19.6s
– 60417.64 = – 19.6s
Divide both side by –19.6
s = –60417.64 / –19.6
s = 3082.53 m
Thus, the car travelled a distance of 3082.53 m before stopping completely.
C. Determination of the acceleration of the object.
Initial velocity (u) = 0 m/s
Final velocity (v) = 600 m/s
Distance (s) = 0.6 m
Acceleration (a) =?
v² = u² + 2as
600² = 0² + (2 × a × 0.6)
360000 = 0 + 1.2a
360000 = 1.2a
Divide both side by 1.2
a = 360000 / 1.2
a = 300000 = 3×10⁵ m/s²
Scince Why do cells need to adjust when conditions change? ____________________________________________________________________________________________
Answer:
A cell is the basic block of life and is always changing to fit its environment.
Explanation:
A cell is the basic founding block of a living organisms. In other words, a cell is the basic membrane unit which contains fundamental molecules of life. It is the cell that all living things are composed of.
The cell always changes with the surroundings and environment and it adapts to it. The cells requires a constant adjustments as the conditions inside and the outside the cells changes to keep a stable internal environment. Because the environment internally and externally is always changing, the cell continuously make adjustments to stay at or the near the set point.
n
Which of the following has a crystalline appearance?
baking soda
salt
baking powder
corn starch
Answer:
B: Salt
Explanation:
I answered this correct beforehand.
Please get it right!! I'm bad at school there's literally no point in learning this so help please.
Ok the question is....
Which model shows a molecule of a substance that is made up of three elements?
hey pls help with this HDJSJDH im rlly bad at this kinda stuff :,) i'll mark the correct answer brainliest
Answer:
A. Cue, White Ball, Blue Ball
Explanation:
Visualize in which order things are being hit