Answers
I don't know please mark as brilliant
Related Questions
A 24 kg object, initially moving at 20 m/s, is slowed by an applied force of 20 N to a final velocity of 16 m/s. How much time did this take?
Answers
Answer:
Explanation:
Turtle ba lls
Answer:
4.8 seconds
Explanation:
Ft=change in momentum
Initial momentum=mv=24*20=480 kg*m/s
new momentum=mv=24*16=384 kg*m/s
change in momentum=96 kg*m/s
Ft=change in momentum
20(t)=96
t=4.8 seconds!
14. Saeed is pulling a 6 kg heavy rock with an upward force of 40 N but does not succeed to lift it up. What is the magnitude of the normal force on the rock?
Answers
Answer:
58.8 N
Explanation:
The normal force is calculated as equal to the perpendicular component of the gravitational force.
Thus; N = mg
We are given m = 6 kg
Thus;
N = 6 × 9.8
N = 58.8 N
Thus, magnitude of normal force on the rock = 58.8 N
PLEASE HELLP ILL GIVE BrAINLY AND HEART
you are visiting a town that is in the middle of a large continent. How would you expect the ocean currents to effect the climate in the town?
A ) More Thunderstorms
B ) Cooler Temperatures
C ) Warmer Temperatures
D ) There is little effect on the town's climate
Answers
Answer:
D
Explanation:
PLEASE HELP ASAP!!!
GIVING BRAINLIEST!!!
40 points!!
Answers
So the answer is A) 8400 J
I was just rewriting my notes on the work lesson I did in class today, so I saw this question at the perfect time!! :)
Hope it helps!! :)
Answer:
According to me Option is the right answer
A. 8,400 J
What happens to the arrangement of atoms in matter as it is heated?
Answers
Answer:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance.
Explanation:
When people place a metal saucepan on the heating element of a stove, heat is transferred from the element to the saucepan by: A reflection.
B convection.
C conduction.
D radiation.
Answers
pls pls pls pls help!!!!!
A 96 kg man is standing in an elevator. The man experiences a net force when the elevator moves at an acceleration of 4.0 m/s2 upward and downward. Find both net forces
Answers
Answer:
The net upward force the man experiences is approximately 1,324.8 N
The net downward force the man experienced is approximately 556.8 N
Explanation:
The given mass of the man, m = 96 kg
The acceleration of the elevator, a = 4.0 m/s²
According to Newton's third law of motion which states that action ad reaction are equal and opposite, when the elevator moves upwards, we have;
The net force the man experiences, F = Gravitational force, m·g + The force of the elevator pushing upwards, m·a
∴ ↑F = m·g + m·a
Where;
F = The net force the man experiences
m = The mass of the man = 96 kg
g = The acceleration due to gravity ≈ 9.8 m/s²
a = The acceleration of the elevator = 4 m/s²
∴ ↑F = 96 kg × 9.8 m/s² + 96 kg × 4 m/s² ≈ 1,324.8 N
The net upward force the man experiences ≈ 1,324.8 N
When the elevator moves downwards, we have;
The net force the man experiences, F = Gravitational force, m·g + The loss of the gravitational force as the floor moves further downwards, -(m·a)
∴ F = m·g + -(m·a) = m·g - m·a
F = m·g - m·a
∴ ↓F = 96 kg × 9.8 m/s² - 96 k × 4 m/s² ≈ 556.8 N
The net downward force the man experienced ≈ 556.8 N
Listed in the Item Bank are individual steps that need to be ordered. To find out more information about steps, some have more details
available when you click on them. Drag and drop the steps in the proper order by placing each in its corresponding open rectangle. Be sure
that the earliest step is placed next to the number 1.
Answers
Answer:
radio
microwave
Infrared
Visible
Ultraviolet
X-ray
Gamma ray
I hope this helps you a little bit
a wagon of mass 42 kg is pushed by a student a distance of 12.2 meters, and 297 j of work was sone on the wagon how much force did the student apply assuming that it was constant
Answers
Answer:
Force=2.484 N
Explanation:
[tex]f = \frac{w}{gh} \\ = \frac{297}{9.8 \times 12.2} \\ f = 2.484 \: n [/tex]
Hope it helped
PLS mark BRAINLIEST
A wagon of mass 42 kg is pushed by a student a distance of 12.2 meters, and 297 j of work was done on the wagon force did the student apply is 24.34 N.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
work = force*distance
force = work/distance
force = 297/12.2
force = 24.34 N
A wagon of mass 42 kg is pushed by a student a distance of 12.2 meters, and 297 j of work was done on the wagon force did the student apply is 24.34 N.
To learn more about force refer to the link:
brainly.com/question/13191643
#SPJ2
A box of mass 5.0 kg is initially at rest. A 500 N force causes it to move horizontally through a
distance of 12.00 m. How much work would there be?
Answers
Answer:
Workdone = 6000Nm
Explanation:
Given the following data;
Mass = 5kg
Force = 500N
Distance = 12m
To find the work done;
Workdone = force * distance
Workdone = 500 * 12
Workdone = 6000Nm
An automobile of mass 1.46 E3 kg rounds a curve of radius 25.0 m with a velocity of 15.0 m/s. The
centripetal force exerted on the automobile while rounding the curve is:
Answers
Answer:
Centripetal force = 13140 Newton.
Explanation:
Given the following data;
Mass = 1.46 E3 kg = 1.46*10³ = 1460 kg
Velocity = 15m/s
Radius, r = 25m
To find the centripetal force, we would use the following formula:
Centripetal force = mv²/r
Substituting into the equation, we have;
Centripetal force = (1460*15²)/25
Centripetal force = (1460 * 225)/25
Centripetal force = 328500/25
Centripetal force = 13140 Newton.
Empujamos un baúl 3 metros, para ello aplicamos una fuerza de 200 Newton. ¿Cuál es el trabajo realizado?
Answers
Answer:
Trabajo realizado = 600 Nm
Explanation:
Dados los siguientes datos;
Fuerza = 200 Newton
Distancia = 3 metros
Para encontrar el trabajo realizado; Trabajo realizado = fuerza * distancia
Sustituyendo en la ecuación, tenemos; Trabajo realizado = 200 * 3
Trabajo realizado = 600 Nm
When you stretch a spring, there is energy in the spring's
potential energy store. What word completes the sentence?
Answers
Answer:
field strength i think, I'm not that sure.
A billiard ball rolls from rest down a smooth ramp that is 8.0 m long. the acceleration of the ball is constant at 2.0?
Answers
Motion maps for two objects, Y and Z, are shown.
Y →
Z
x
How many seconds does Object Z start before Object Y?
2.
03
04
5
Answers
Answer:
i can't see the map plzz send the map
Answer:
its 3
Explanation:
I just took test
Gravitational potential energy (1) - masss (kg) x gravitational field strength (N/kg) x height (m)
1. Calculate the gravitational potential energy of the following masses on top of Trump tower which has a mass
of 202 m (g= 9.81 N/kg)
a) 100 kg
b) 90 kg
c) 45 kg
d) 58 kg
e) 1g
1) 1000 g
h) 1998
1) 1.5 kg
g) 100 g
Answers
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the Concept of the Potential Energy.
Here lets calculate it one by one ;-
1.) P = mgh ==> 100*9.81*202===> 198162 Joules
2.) P = mgh ==> 90*9.81*202 ==> 178345.8 Joules
3.) P = mgh ===> 45*9.81*202 ===> 89172.9 Joules
4.) P = mgh ===> 58*9.81*202 ===> 114933.96 Joules
5.) P = mgh ===> 0.001*9.81*202 ===> 1.981 Joules
6.) P = mgh ===> 1.00*9.81*202 ===> 1981.62 Joules
7.) P = mgh ===> 1.998*9.81*202 ==> 3959.27 Joules
8.) P = mgh ===> 1.5*9.81*202 ===> 2971.43 Joules
9.) P = mgh ===> 0.1*9.81*202 ===> 198.162 Joules.
Above we calculated the potential energy for every mass given above.
you do no know an objects velocity until you know its _____.
Answers
A mass sitting on a horizontal, frictional surface is attached to one end of a spring; the other end is fixed to a wall. 3.0 J of
work is required to compress the spring by 0.20 m. If the mass is released from rest with the spring compressed, it
compresses a maximum acceleration of 15 m/s?.
a) Determine the spring constant.
b) Determine the mass.
d) What is the velocity when the mass reaches maximum acceleration?
c) Deterinine the net force when the mass passes 0.10m compression
d) Determine the acceleration when the mass passes 0.10m compression.
e) Determine the velocity when the mass passes 0.10m compression
Answers
Answer:
I started answering this before everything was erases, but briefly
W = 1/2 K x^2 so K = 2 W / x^2 = 6 * 25 = 150
Also F = - K X = 150 * 1/5 = 30 N at max extension
m = F / a = 30 /15 = 2 kg
Since max extension occurs at t = 0 you can write
x = A sin ω t
v = ω A cos ω t
a = -ω^2 A sin ω t note that there is no phase angle here
Also at .1 compression
.1 = .2 sin ω t and sin ω t = 1/2 and ω t = 30 deg = pi / 6
Substiture these values above to get velocity and acceleration when
ω t = 30 deg
How the choice of building materials and techniques can help them cool down faster, after heating up.
Answers
Answer:
The choice of building materials and techniques can help them cool down faster, after heating up is explained below in brief details.
Explanation:
Building materials
Buildings that are composed of rock, bricks, or pavement, or inserted into the territory, can seem cooler thanks to the great "thermal mass" of these elements – that is, their capability to assimilate and discharge heat gently, thereby softening temperatures over time, producing daytime cooler and night-time warmer.
what is reflection of light ? Which type of surface is required for a regular reflection
Answers
Answer:
MIRROR
Explanation:
Answer:
reflection of light is the bouncing back of light rats when it falls on a smooth surface or polish surface.
rock at the edge of a cliff has kinetic energy because of its position.
True
False
Answers
its false rock is at edge
Explain the different types of energy in a working wind turbine
Answers
Answer:
A wind turbine converts the kinetic energy of the wind into mechanical power.
The wind moves the turbine and the turbine produce energy.
HELP!! AM I CORRECT?? PLS TELL ME, IF U ANSWER PROPERLY I'LL GIVE U BRAINLIEST!!
Answers
Answer:ur right I think
Explanation:
Answer:
HON, i'm going to be honest, i'm not sure but it sounds like it is the Universal Expansion from what I learned about space
I'm sure this helps but if it doesn't DON'T GIVE ME BRAINLIEST, if it does then do
b. What is the man's weight on Mars where the acceleration due to gravity is
3.7 m/s2 ? Show your answer in both Newtons and pounds.
Answers
Answer:
How much is the mass of man?
As time goes on, the ENTROPY in a closed system should increase. This is because of which Law?
A) Conservation of Energy
B) Conservation of Momentum
C) 1st Law of Thermodynamics
D) 2nd Law of Thermodynamics
E) None of these
Answers
Answer:
The answer is D
The second law of thermodynamics
Calculating net force
Answers
Answer:
0N.
Explanation:
Net force is the sum total of forces acting on an object.
The Fn which is the net force is
450+ (-250) + (-600)+ 600+ 0 + 250 + (-450)
= 450-250+(-600)+ 600+0+250-450
= 0N
The net force is 0
what is the gravitational potential energy when a bungee jumper
of 80 kg is lifted 60 m in a crane before jumping?
Answers
47,040 J
Explanation:
GPE= ham
GPE= (60)(9.8)(80)
GPE= 47,040 J
last question, can someone help please?
Answers
Explain why a charged body loses its charge if we touch it with our hand?
if u answer me I can give u brainliest ☺️
Answers
Answer:
Explanation: A charged body loses its charge when we touch it with our hand because some of the charge flows through our body to the ground earthing. As a result the charge on the body decreases every time we touch it. This is because of earthing.
Explanation:
yw .
Explanation:
When we touch a charged body, it loses its charge, due to the process of earthing. Our body is a good conductor of electricity. It transfers the charges to the earth
PLS HELP!! I will make brainliest!!
Which process is an example of a chemical reaction?
a. an iron nail rusting
b. bath water cooling while you take a bath
c. a piece of metal being heated until it expands
d. a glass window breaking when hit with a baseball
Answers
Answer:
Rusting!
Explanation:
Rusting is a chemical reaction because it is the process of oxidation of a metal.
Answer:
rusting
Explanation: