Answer: D
Explanation:
From Newton second law of motion,
Ft = Mv
Where Ft = impulse and MV = momentum
since Ft = Mv, then,
impulse = mv
Also from the definition of pressure,
Pressure = force / area. that is,
P = F/A
make F the subject of formula
F = PA
The only option in which impulse can be expressed among the options is D which is impulse = mv
A 24.8 tall object is placed in front of a lens, which creates a -3.09 cm tall image. What is the magnification?
Answer: 0.125
Explanation:
Given that the
Object height U = 24.8 cm
Image height V = 3.09 cm
Magnification M is the ratio of the image height to the object height. That is, divide the given image height by the given object height.
M = V/U
Substitute V and U into the formula above.
M = 3.09/24.8
M = 0.125
Magnification is therefore equal to 0.125 approximately
Answer:
-0.125.
Explanation:
The previous explanation is right except for that it doesn't take into account that the -3.09 is negative – therefore, the positive answer is incorrect.
-0.125 is correct on Acellus.
As a liquid is added to a beaker, the pressure exerted by the liquid on the bottom of the beaker ____. A. Stays the same B. Decreases C. Increases
The pressure exerted by the liquid in the bottom of the beaker increases when a liquid is added to a beaker compared to the liquid near the beaker point. As density rises in increasing type of matter, the pressure increases.
Hope this helps!
Answer: increases
Explanation:
A force of 3300 N is exerted on a piston that has an area of 0.060 m².
What force is exerted on a second piston that has an area of 0.18 m??
Answer:
9,900 N
Explanation:
We know that the pressure in a fluid is transmitted with an equal pressure throughout, hence the formula [tex]pressure_1[/tex] = [tex]pressure_2[/tex]. As your know pressure is represented by force over area, so this formula can be rewritten as [tex]force_1/Area_1[/tex] = [tex]force_2/Area_2[/tex] .
3300 N / 0.060 m² = [tex]force_2[/tex] / 0.18 m²
Let's say that [tex]force_2[/tex] = x. Now let us solve for x.
3300 N / 0.060 m² = x / 0.18 m²,
3300 / 0.060 = x / 0.18,
55,000 = x / 0.18,
x = 55,000 [tex]*[/tex] 0.18 = 9,900 N - this is the force exerted on the second piston
What is the potential energy of a 25 kg bicycle resting at the top of a hill 3 m high? (Formula: PE = mgh)
0 75 J
735 J
O 245 J
0 37.8 J
Answer:
The answer would be 735J
Explanation:
PE=mgh
=(mass)(force of gravity)(height)
=(25kg)(9.8m/s^2)(3m)
=735J
Explanation:
given, mass =25 kg
height=3m
and acceleration deu to gravity =9.8m/s^2
now, we have,
pe =mgh
=25×9.8×3
=735j.....ans
When is a train on Earth in motion relative to the sun? A It is relative to the sun only when the train is not moving. B It is never in motion relative to the sun. C It is relative to the sun only when the train is moving. D It is always in motion relative to the sun.
Answer:
A. It is relative to the sun only when the train is not moving.
Explanation:
Question 10 (5 points)
A large, massive object collides with a stationary, smaller object on an ice rink. If the large
object transfers all of its momentum to the smaller object, which statement below describes
the velocity of the smaller object after the collision?
A. It will move faster than the large object was moving initially.
B. It will move slower than the large object was moving initially.
C.It will move at the same speed that the large object was moving initially.
D. It won't move.
Answer:
A. it will move faster than the large object was moving initially
Answer:
A. It will move faster than the large object was moving initially.
Explanation:
mark me brainliest since i wasn't sure of myself
Destructive interference between two superimposed waves can result in a node, or point with no displacement.
True
False
Answer:
False..............Answer:
true
Explanation:
i just took the test <3
the maximum displacement of a particle, within a wave, above or below its equilibrium position, is called__________
Answer:
the amplitude.
Explanation:
Plz Help me with this ?
Answer:
the answer is c part.
Explanation:
hope it helps.
Answer:
The answer is C How many times the heart beats in one minute.
Engineers are trying to improve a race car. Their goal is to increase the acceleration of the car using the same engine. Which change shows the best application of Newton’s laws of motion to achieve this goal? increasing the inertia of the car decreasing the reaction force increasing the action force decreasing the mass of the car Mark this and return
Answer:
d. decreasing the mass of the car
Explanation:
Engineers are trying to improve race cars. Their goal is to increase the acceleration of the car using the same engine, it can be achieved by decreasing the mass of the car, therefore the correct answer is option C.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
As given in the problem Engineers are trying to improve a race car. Their goal is to increase the acceleration of the car using the same engine,
The acceleration of the car can be increased by decreasing the mass of the car assuming the engine of the car is producing the same amount of force.
Thus, the acceleration can be increased by decreasing the mass of the car, therefore the correct answer is option C.
To learn more about Newton's second law, here refer to the link given below ;
brainly.com/question/13447525
#SPJ6
What's the main term used to locate in the alphabetic index for acute perforated gastrojejunal ulcer
Answer:
the main term used to locate in the alphabetic index for acute perforated gastrojejunal ulcer is ULCER
Explanation:
because the main is a term identifying disease conditions or injuries
Which is not a compound?Which is not a compound? water gold sugar silicon dioxide
Answer:
gold, silicon
Explanation:
i think this is the write answer
Answer:
Gold is not a compound
Explanation:
Which of the following descriptions of gravitational force is not true? Select one: a. It depends of the mass of objects. b. It is a repulsive force. c. It depends of the distance between objects. d. It exists between all objects.
Answer:
B
Explanation:
It is not repulsive at all
Which term describes an observable fact, event, or circumstance?
A. Experiment
B. Theory
C. Hypothesis
D. Phenomenon
Answer:
Phenomenon
Explanation:
phe·nom·e·non
/fəˈnäməˌnän/
noun
1.
a fact or situation that is observed to exist or happen, especially one whose cause or explanation is in question:
"glaciers are unique and interesting natural phenomena"
synonyms
occurrence, event, happening, fact, situation, etc.
2.
a remarkable person, thing, or event:
"the band was a pop phenomenon just for their sales figures alone"
synonyms
marvel, sensation, wonder, prodigy, miracle, etc.
What happens to the gravitational force between two objects as the distance between them decreases?
Answer:
gravitational force increases
Explanation:
Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are brought closer to each other, the force of gravitational attraction between them also increases.
Resistance and resistivity are related by a:
A: factor that is dependent on the length of the material
B: proportionality constant dependent on the source of the material
C: factor that is dependent on the area of the material
D: proportionality constant dependent on the identity of the material
Answer: D
Explanation: Resistance of current in a wire is directly proportional to the length of the wire and inversely proportional to the cross - sectional area of the wire. That is,
R = (rho × L)/A
Where
L = length of the wire
A = cross sectional Area of the wire
rho = resistivity = proportionality constant which depends on the quality of the wire.
Therefore, Resistance and resistivity are related by a:
proportionality constant dependent on the identity of the material.
_____ is considered a significant digit when it is to the left or the right of the decimal point and it follows a non-zero digit, or when it is betwee two digits.
Answer:
Zero (0)
Explanation:
Zero is only counted significant in some cases, and some of those are listed in the question.
For eg, 0.0003 (here 0 is insignificant), however, 3000.003 (here all 0's are significant)
HELPPP PLEASEEE!!!!!
Speed of sound and temperature
Drag the item bank to its corresponding match
Answer:
1) The speed of sound increases
2) 440 Hz
3) 29°C
4) 17°C
5) 434 Hz
6) 12 m/s
7) 17.3 m
Explanation:
1) The speed of sound increases
2) V = f×λ
f = V/λ = 343/0.78 = 439.744 ≈ 440 Hz
3) V = f×λ
512 × 0.68 = 348.16 m/s
348.16 - 331 = 17.16
T = 17.16/0.6 = 28.6 ≈ 29°C
4) Increase in speed = 350 - 340 = 10
Increase in temperature = 10/0.6 = 16.67° ≈ 17°C
5) f = V/λ = 343/0.79 = 434 Hz
6) 331 + 0.6×30 - (331 × 0.6 ×10) = 12 m/s
7) V = 331 + 0.6×25 = 346m/s
λ = 346/20 = 17.3 m
Becky has a younger sister. If the sister was half Becky's age when Becky was 6, and Becky is now 70, how old is Becky's sister?
Answer:
67
Explanation:
Answer:
35
Explanation:
It's a trick question!
Because the younger sister was half the age of Becky when she was 6. She also has to be half the age of Becky today.
So, 70 ÷ 2 = 35
Hope this helps you out! : )
Which reaction takes place in a nuclear fission reactor?
Answer:
Last option in the list of possible answers, with U235 and n (neutron) in the left (originators) of the reaction diagram.
Explanation:
Uranium 235 (which is a fissile isotope of uranium) plus slow neutrons is what produce the chain reaction that feeds nuclear reactors.
Answer:
D
Explanation:
Did the test
what is the difference between LEO and GEO satellites? PLS ANSWER FAST
Answer: LEO satellites are low earth orbiting whereas GEO satellites are geostationary earth orbiting satellites.
Explanation: Satellites in low Earth orbit, or LEO, are the closest devices to Earth. You'll often hear the terms GEO and GSO used interchangeably, but they’re not always the same. Both types of satellites sit at roughly 22,300 miles above Earth’s surface, but the way they orbit is different.
What information does a free-body diagram show?
A. The net force acting on a falling object
B. The smallest force acting on an object
C. The largest force acting on an object
D. All of the force vectors acting on an object
Answer:
d
Explanation:
In physics and engineering, a free body diagram (force diagram, or FBD) is a graphical illustration used to visualize the applied forces, moments, and resulting reactions on a body in a given condition.
Answer: All of the force vectors acting on an object.
Please help me in this question!! There is NO picture for this question! In a physics lab, 0.30 kg puck A, moving at 5.0 m/s [W], undergoes a collision with 0.40 kg puck B, which is initially at rest. Puck A moves off at 4.2 m/s [W 30° N]. Find the final velocity of puck B.
Answer:
v2 = 0.6 m/s
Explanation:
Given:
Mass(m1) = 0.30 kg
Initial velocity(u1) = 5 m/s
Mass(m2) = 0.40 kg
Initial velocity(u2) = 0 m/s
Final velocity(v1) = 4.2 m/s
Find:
Final velocity(v2)
Computation:
Using conservation of momentum.
m1u1 +m2u2 = m1v1 + m2v2
(0.30)(5) + (0.40)(0) = (0.30)(4.2) + (0.40)(v2)
1.5 + 0 = 1.26 + 0.40 v2
0.24 = 0.40 v2
v2 = 0.6 m/s
Which statement is true for objects in dynamic equilibrium?
Answer:
The correct answer to the question is objects have zero acceleration.
Explanation:
Before answering the question, first we have to understand dynamic equilibrium .
A body moving with uniform velocity is said to be in dynamic equilibrium if the net external forces acting on the body is zero. Hence, the body is under balanced forces.
If the external forces acting on a body is not balanced, then the body will accelerate which will destroy its equilibrium condition. Hence, the necessary and sufficient condition for a body to be in dynamic equilibrium is that the forces are balanced.
When a body is in dynamic equilibrium, the body moves with uniform velocity along a straight line unless and until it is compelled by some external unbalanced forces.
Hence, the rate of change of velocity or acceleration of the body will be zero.
Answer:
objects have zero acceleration.
Explanation:
A lens of focal length 15.0 cm is held 10.0 cm from a page (the object ). Find the magnification .
Answer:
Magnification, m = 3
Explanation:
It is given that,
Focal length of the lens, f = 15 cm
Object distance, u = -10 cm
Lens formula :
[tex]\dfrac{1}{v}-\dfrac{1}{u}=\dfrac{1}{f}[/tex]
v is image distance
[tex]\dfrac{1}{v}=\dfrac{1}{f}+\dfrac{1}{u}\\\\\dfrac{1}{v}=\dfrac{1}{15}+\dfrac{1}{(-10)}\\\\v=-30\ cm[/tex]
Magnification,
[tex]m=\dfrac{v}{u}\\\\m=\dfrac{-30}{10}\\\\m=3[/tex]
So, the magnification of the lens is 3.
Answer:
3.00 - Magnification.
Now this is REALLY helpful ( I hope)
Image distance :
-30.0It is CORRECT FOR ACELLUS!I wish you luck!what are AR,L,K in the periodic table
Answer:
Argon, Lithium and Potassium
Explanation:
Answer:
AR=Argon, L=Lithium K=Potassiaum
Explanation:
Según la etiqueta de un frasco de aderezo para ensalada, el volumen del contenido es 0.473 litros (L). Use solo las conversiones 1 L= 1000 cm3 y 1 in = 2.54 cm para expresar dicho volumen en pulgadas cubicas
Answer:
0.473L = 7751.08 in^3
Explanation:
In order to calculate the given amount of volume in cubed inches, you use the following convertion identities:
1L = 1000 cm^3 (1)
1 in = 2.54 cm (2)
The volume is 0.473 L. Then, by using (1) and (2) you obtain:
[tex]0.473L*\frac{1000cm^3}{1L}*\frac{(2.54in)^3}{1cm^3}=7751.08in^3[/tex]
0.473L are equivalent to 7751.08 in^3
A space capsule having a mass of 9.0×10^2 kg is projected vertically upwards from the Earth’s surface with an initial kinetic energy of 7.0×10^9 J. With no air resistance, determine the maximum distance from the center of the Earth attained by the capsule.
Answer:
7.3 x 10^6 m
Explanation:
I NEED HELP ON 2 QUESTIONS PLEASEEE
Answer:
2) c) give-way vessel
3) a) With one short blast
Explanation:
2) A vessel that is required to take early substantial action to ensure avoiding collision called Give way vessel
In overtaking, the vessel intending to overtake is the Give-Way Vessel the vessel that is going to be overtaken is the Stand-On Vessel
Therefore, the correct option is c) give-way vessel
3) When vessels use sound signals in a meeting head on situation both vessel are Give-Way vessels and both vessel pass the each other by turning to the starboard side therefore they intend to pass each other on their port side requiring one short blast
Therefore, the correct option is a) With one short blast.
Which is developed during the process of technological design?
solution
experiment
conclusion
summary
Answer: SOLUTION
Explanation: A technological design is often adopted when there is a need to solve or find solution to a certain or identified problem. The technological design process is often required in other to develop technologically driven products which is capable of providing solution to a perceived problem. The steps involved includes;
Identifying the problem at hand, carrying out further and thorough research on them, proferring possible solutions out of which the best possible approach is selected. Then the solution is modeled, the model is tested and refinements are made depending on outcome of the test. Testing will have to be repeated upon refinement of the model before the final outcut is communicated.
Answer:
sulution
Explanation:
I took the test.