Answer:
c
Explanation:
impulse Is the product of force and distance so it's generally formula
The impulse should be equivalent to the option c. a force applied to an object for a period of time.
What is an impulse?Impulse of force represent the product of the resultant force ΣF and also the duration of the force Δt when the force should be constant. Also it should be lead to the changed to motion and changes to momentum
Therefore, The impulse should be equivalent to the option c. a force applied to an object for a period of time.
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A grasshopper jumps and accelerates at 4.5 m/s2. If its legs exert a force of 0.062 N during the jump, what is the mass of the grasshopper?
Answer:
0.014 kg
Explanation:
trust me its right i took the assessment and got 100%. :)
State the career function of civil engineering
Answer:
Civil engineers design major transportation projects. Civil engineers conceive, design, build, supervise, operate, construct and maintain infrastructure projects and systems in the public and private sector, including roads, buildings, airports, tunnels, dams, bridges, and systems for water supply and sewage treatment.
Acceleration measures how much the ___________ of an object changes over time.
a) velocity
b) location
Answer: velocity
Explanation: v/t
The place where potential energy is zero is
a) At height equal to double the radius of the earth
b) At infinity
c) At a height equal to half the radius of the earth
d) At a depth equal to 1/3 radius of the earth
Answer:
D. At a depth equal to 1/3 radius of the earth
When you drop a 2 kg iron weight and a 5 kg iron weight from a height, predict which one will fall first to the ground. Justify your answer
helppppp!!!!!!!!!!!!!!!
Answer:
The 5kg iron.
Explanation:
It would be 5Kg iron because it is heavier. Heavier objects fall faster.
When you drop a 2 kg iron weight and a 5 kg iron weight from a height, both will hit the ground at the same time.
What is weight ?"It is the measure of the force of gravity acting on a body. "The formula for weight it is given by: w = mg. As weight is a force its SI unit is also the same as that of force, SI unit of weight is Newton (N).
What is free fall of a body ?"State of a body that moves freely in any manner in the presence of gravity. The planets, for example, are in free-fall in the gravitational field of the Sun. Newton's laws show that a body in free-fall follows an orbit such that the sum of the gravitational and inertial forces equals zero."
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1. An electric lamp a marked 240V, 6A. What
its resistance when it is operated at the correct
voltage?
Answer:
The resistance of the lamp is 4Ω.
Explanation:
You have to apply voltage formula :
V = I × R
R = V ÷ I
R = 240 ÷ 60
R = 4 Ω
A student wants to design an experiment to study the transformation of mechanical energy. Which object can be used to investigate how gravitational potential energy transforms into kinetic energy?(1 point)
a spring
a flat race car track
a slide
a rug
Answer: I think it would be a spring
Explanation: a rug, a slide, and a race track would all have friction and friction is not a conservative force which wouldn’t qualify for mechanical energy.
That’s my guess I’m not very good at this stuff though
The acceleration reaches its minimal value of zero at the top of the trajectory. *
True
False
it is true. the trajectory reaches the value of zero at the top
a motorcycle starts from rest covers 200 meter distance in 6 second calculate final velocity and acceleration
Explanation:
s = ut + 1/2 a t^2
200 = 0 * 6 + 1/2 * a * (6)^2
200 = 1/2 * a * 36
200 = 18 a
a = 200/18
a= 11.1m/sec^2
v = u + at
v = 0 + 11.1 * 6
v = 66.6m/s
hope it helps you
What were the three factors that affected density
Answer:
Pressure, temperature and humidity all affect air density. And you can think of air density as the mass of air molecules in a given volume.
Explanation:
Deforestation invites natural disasters. Give reason.
Answer:
In addition to depleting resources for forest-dependent communities, deforestation is contributing to an increase in small-scale natural disasters.“That means when there's heavy rainfall, forest soil can absorb water underground and disburse it to streams.
Answer: Deforestation invites natural disasters by the following reasons:-
i) Soil erosion
ii)Landslides due to soil erosion
iii) Forest fire
iv) Flooding due to soil erosion
Hope it helped u,
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Name 2 fundamental units of SI system except that of MKS system.
The others are:
Ampere
Mol
Candela
Answer:
Ampare mole candelahope it is helpful to you
6. A car speeds up from 22 m/s to 26 m/s in 2 seconds, what is the average acceleration of the car?
Answer:
2 m/s/s
Explanation:
a= (vf-vi)/t
a = (26-22) / 2
a = 2 m/s/s
4) An object is dropped from rest. After 6 seconds, what is the velocity of the object?
Hint: Use this equation and solve for the final velocity: y = gt
5) An object is dropped from rest. After 4 seconds, how far did the object fall?
Hint: Use this equation and solve for displacement: d = 12 gť
Can you solve both for me
Answer:
for question no.4,
time =6 secs
acceleration due to gravity (g)= 9.8 m/s^2
velocity=gt
=6×9.8
=58.8m ans...
for question no .5,
time taken = 4seconds
aacceleration due to gravity (g)=9.8 m/s^2
distance=12gt
=12×9.8×4
=470.4meter answer...
18. How much force would it take to push another, larger friend who has a mass of 70 Kg to accelerate
at the same rate of 4 m per sec every sec
Answer:
280N
Explanation:
f = mass x acceleration
the velocity of a car changes from 5 m/s to 20 m/s in 30 sec the acceleration?
Answer:
0.5m/s2
..............
please help me I need this today
Answer:
42km/h
Explanation:
Change in km/ Change in time
1.4 x 100
0.033 x100
140km/3.3
= 42.4242 --> 42km/h
Brainliest Appreciated!
Which word fits in this sentence:
A __________ is how long it takes for one of the planets to go around the sun one time. Earth takes 365.25 days to go around the sun one time. We call this a _______.
A: revolution, year
B: year, revolution
Answer:
B because thats the answer
4. The chart shows melting and boiling points of
different substances.
Melting and Boiling Points
Substance
Alcohol
Formaldehyde
Nicotine
Benzene
Nitroglycerine
Melting Point ("C) Boiling Point ("C)
-114
78.2
-92
-19
-79
247
5.5
80
13.5
250
Which substance freezes at the lowest
temperature?
A. Alcohol
B. Nicotine
C. Formaldehyde
Answer:
The correct option is A
Explanation:
Firstly, it should be noted that the freezing point of a substance can be assumed to be melting point of that substance because a substance will normally change from liquid to solid (freezes) at the same point it changes from solid to liquid (melts). For example, water freezes at 0°C and also starts melting at 0°C.
Thus, the substance with the lowest melting point among the substances mentioned in the question is alcohol (ethanol) with the melting point of -114°C. Hence, ethanol also has the lowest freezing point thereby freezing at the lowest temperature.
How do you solving kinematic equations for horizontal projectiles?
A 40 kg boy on a skateboard throws a 2 kg ball at 20 m/s to the left. How fast did the boy move to the right on his skateboard?
Could you help me please !!!
A tin of paint has a total mass of 7000g and a volume of 5000 cm³. The empty tin has a mass of 500g. Determine the mass of paint.
Answer:
6500g
Explanation:
7000 - 500 = 6500
The mass of paint will be "6500 g".
Given:
Total mass,
7000 gVolume,
5000 cm³Mass of empty tin,
500 gNow,
The mass of paint will be:
= Total mass - Mass of empty tin
By putting the values, we get
= [tex]7000-500[/tex]
= [tex]6500 \ g[/tex]
Thus the approach above is correct.
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how can you show that pressure increases with the increase of force?
Answer:
...........................
you are running out and the first mike takes 10 minutes the second mile takes you 20 minutes this is an example of
Answer:
??????
Explanation:
Jacob is riding his bike down a tall hill. At the top of the hill, he has 2800J of potential energy. At the bottom of the hill, when he is going the fastest, his kinetic energy measures 2650J. Which statement below is true? Question 5 options: The total amount of energy at the bottom of the hill cannot equal the amount at the top, because some of the energy is gained. The total amount of energy at the bottom is equal to the amount at the top, but some energy was converted into other forms due to friction. The total amount of energy at the bottom of the hill cannot equal the amount at the top, because some of the energy is destroyed. The total amount of energy at the bottom is equal to the amount at the top, but he gained some energy as he traveled due to a higher speed.
Answer:
D. The total amount of energy at the bottom is equal to the amount at the top, but he gained some energy as he traveled due to a higher speed.
Explanation:
The total amount of energy at the bottom is equal to the amount at the top, but some energy was converted into other forms due to friction.
Therefore the correct answer is option B.
What is mechanical energy?The sum of all the energy in motion (total kinetic energy) and all the energy that is stored in the system (total potential energy) is known as mechanical energy.
The expression for total mechanical energy can be given as follows
ME= PE + KE
As given in the problem Jacob is riding his bike down a tall hill. At the top of the hill, he has 2800J of potential energy. At the bottom of the hill, when he is going the fastest, his kinetic energy measures 2650J.
However, some energy was changed into other forms owing to friction, so the total quantity of energy at the bottom is equal to the whole amount at the top.
Thus, option B is the appropriate response,
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is kinetic energy always transformed into potential energy?
Answer:
Well, actually yes.
Explanation:
As the ball is going up its kinetic energy is getting transformed into potential energy. At the point, where entire kinetic energy (some part will be lost in overcoming air resistance) is transformed to potential energy ,it will stop going up, And from that point it will fall down.
Intermolecular force is stronger than the kinetic energy in?
Answer:
If the average kinetic energy is greater than the attractive forces between the particles, a substance will not condense to form a liquid or a solid. If the kinetic energy is less than the attractive forces, a liquid or solid will form.
Explanation:
what kind of magnets will attract
Answer:
Magnets are only attracted to special metals. Iron, cobalt and nickel are magnetic. Metals that have iron in them attract magnets well.
Explanation:
from Google
Answer:
Magnets can only attract some metals. These special metals are called ferromagnetic. Magnets are usually made of iron, cobalt, and nickel, which are also the ferromagnetic metals.
Explanation:
Use the following v-t graph to answer the next questions
5
B
Velocity )
neters/second(s)
4
A
3
2
1
Time (1)
0
1
2
3
4
5
2
8
10
11
12
13
1015
16
second(s)
.1
D
-2
C С
3
5
Answer:
mag aral ka bubu
Explanation:
ang tanga mu hahahahhaha luko nandyan lang naman yan hahahhahahahahahahhahahahahahahahhahahahahahaahahahahahahahhahahahahahahahahahahahahaahhahahaahahhaahha09561782
I NEED HELP ASAP PLEASE!!!!!
Which object will accelerate faster?
an object that has 4 N of force applied to it
an object that has 35 N of force applied to it
Answer:
answer is 2 option because more force is applied