Answer:
1500J
Explanation:
Work done = Force * Distance
Work = ?
Force = 50N
Distance = 30m
Work = 50 * 30
Work = 1500J
What provided evidence for the revolution of earth around the sun?.
Explanation:
there are many things. I am not sure what your teacher told you.
one of the first strange observations leading to this conclusion was the "loop-di-loop" in the track of Mars. because of the different orbits of Earth and Mars, sometimes one (particularly Earth as the faster one) swings around the sun in relation to the other, and with that first moves away and suddenly moves closer again, making the track of Mars appear on Earth as if it would make a loop in the sky.
Can someone pls help me
Answer:
Ball's acceleration is 0.3 m/s²
Explanation:
final velocity = 2.0 m/s
initial velocity = 0.50 m/s
acceleration = (v-u)/t
= (2.0-0.50)/5
=1.5/5
=0.3m/s²
an electromagnetic wave travels in a straight line through a vacuum. The wave has a frequency of 6.0THz. What is the number of wavelengths in a distance of 1.0m along the wave?
Answer:
i think it is 123
What is the difference between the momentum and the kinetic energy of an object
Answer:
About 7,390,000 results (1.04 seconds)
Image result for What is the difference between the momentum and the kinetic energy of an object
One of the most obvious differences between kinetic energy and momentum is that kinetic energy depends quadratically on velocity (it increases as v2), while momentum depends linearly on velocity (it increases as just v). This means that kinetic energy actually increases way faster with velocity as momentum does.
Explanation:
A soccer player kicks a ball, applying a force of 1,000 newtons over a distance of 0. 2 meter. The ball travels 50 meters down the field before another player stops the ball. How much work was done during the kick?.
An unbalanced force gives a 2.00 kg mass an acceleration of 5.00 m/s? What is the force applied to the object?
Answer:
10N
Explanation:
Equation: ΣF = ma
Fapp = ma
Fapp = (2kg)(5m/s^2) (im guessing you mean 5.00 m/s^2 not m/s)
Fapp = 10*kg*m/s^2
Fapp = 10N
how is a body charged by friction?
Answer:
When insulating materials rub against each other, they may become electrically charged . The material that gains electrons becomes negatively charged The material that loses electrons is left with a positive charge
Explanation:
we can see light move with our bare eyes true or false
Answer:
Hi, so the Answer would basically be Yes, and No because it depends on the form of light but in general I would say that the answer would be No.
Explanation:
We call it visible light because we can see it with our own eyes. There are different forms of light which we cannot see with our bare eyes. Ultraviolet light is an example of a form of light which we cannot see with just our eyes.
The brakes on your automobile are capable of creating a deceleration of 5.0 m/s2. If you are going 135 km/h and suddenly see a state trooper, what is the minimum time in which you can get your car under the 75 km/h speed limit
Answer:
3.33 seconds
Explanation:
We can use the velocity formula [ v = u + at ] to solve.
Find the value "u".
135km/h -> 135km*1000m/3600s -> 37.5m/s
Find the value "v".
75km/h -> 75km*1000m/3600s -> 20.83m/s
Keep in mind we are dealing with "deceleration" so when we input 5.0m/s into the formula, it will be a negative value.
Now, find "t" which is the value we aren't given with the values we're given in the question.
20.83 = 37.5 - 5t
-16.67 = -5t
3.33 = t
Best of luck!
During a crash, a dummy with mass of 60.0k hits an airbag that exerts a constant force on the dummy. The acceleration of the dummy is -250m/s^2. What force did the airbag exerts on the dummy ?
The magnitude of the force exerted on the dummy by the airbag is -15,000 Newton.
Given the following data:
Mass of woman = 60.0 kg.Acceleration = -250 [tex]m/s^2[/tex]To calculate the magnitude of the force exerted on the dummy by the airbag, we would apply Newton's Second Law of Motion:
What is Newton's Second Law of Motion?Mathematically, Newton's Second Law of Motion is given by this formula;
[tex]Force = mass \times acceleration[/tex]
Substituting the given parameters into the formula, we have;
[tex]Force = 60 \times -250[/tex]
Force = -15,000 Newton.
Read more on force here: https://brainly.com/question/1121817
An object has a mass of 60 kg on the Earth. What is the mass of the object on the surface of the Moon where the acceleration due to gravity is only 1/6 of that on the Earth
Answer:
60kg
Explanation:
Mass is the amount of "matter" an object contains, which unlike weight, does not change based off of gravitational force.
PLEASE HELP ITS DUE IN 12 MINUTES
Which statement describes the function of bones in mammals such as dogs and horses?
A. Bones provide protection for organs in the body
B. Bones send messages to the brain to move the muscles
C. Bones carry oxygen-rich blood throughout the body
D. Bones connect the brain and the spinal cord
Give an example of mimicry used in nature
Answer:
Camaflouge
Explanation:
When animals blend in with their surroundings to hide from predators.
Ex: A squirrel climbing a tree that is the same color of its fur.
An artic fox lying in the snow.
A bee getting pollen.
Stick bugs blending in with shrubs and trees.
How could you measure the potential energy from your machine?
Answer:
An object can store energy as the result of its position. for example, the heavy ball of demotation machine is storing energy when it is hold at an elevated position
A car on a straight road starts from rest and accelerates at 2.0 meter per second over a distance of 50 meters. Calculate the magnitude of the velocity of the car after undergoing this acceleration. [Show all work, including the equation and substitution with units.]
The magnitude of the velocity of the car after undergoing this acceleration is 14.14 m/s.
What is the final velocity of the car?
The final velocity of the car is calculated by applying the third kinematic equation as shown below.
Mathematically, the third kinematic equation for the final velocity of the car is given as;
v² = u² + 2as
where;
v is the final velocity of the caru is the initial velocity of the cara is the acceleration of the cars is the displacement of the carWhen the car starts from rest, the initial velocity = 0
v² = 0² + 2as
v² = 2as
v = √ ( 2as )
The final velocity of the car is calculated as follows;
v = √ ( 2 x 2 x 50 )
v = 14.14 m/s
Thus, the final velocity of the car is a function of the acceleration and the distance covered by the car.
Learn more about final velocity here: https://brainly.com/question/28843421
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Can someone pls help me
Answer:
yes, of course, how can I help you?
Which statement is true about historical models of the solar system?
1.) The heliocentric model was the first model of the solar system.
2.)Astronomers developed questions from observations that the geocentric model could not answer.
3.)In the heliocentric model every astronomical body travels in perfect circles.
4.)Old explanations about the natural world are always wrong.
A cyclist going downhill is accelerating at 1. 2 m/s2. If the final velocity of the cyclist is 16 m/s after 10 seconds, what is the cyclist’s initial velocity?.
Answer:
[tex]\boxed {\boxed {\sf v_i= 4 \ m/s}}[/tex]
Explanation:
We are asked to find the cyclist's initial velocity. We are given the acceleration, final velocity, and time, so we will use the following kinematic equation.
[tex]v_f= v_i + at[/tex]
The cyclist is acceleration at 1.2 meters per second squared. After 10 seconds, the velocity is 16 meters per second.
[tex]v_f[/tex]= 16 m/s a= 1.2 m/s²t= 10 sSubstitute the values into the formula.
[tex]16 \ m/s = v_i + (1.2 \ m/s^2)(10 \ s)[/tex]
Multiply.
[tex]16 \ m/s = v_i + (1.2 \ m/s^2 * 10 \ s)[/tex]
[tex]16 \ m/s = v_i + 12 \ m/s[/tex]
We are solving for the initial velocity, so we must isolate the variable [tex]v_i[/tex]. Subtract 12 meters per second from both sides of the equation.
[tex]16 \ m/s - 12 \ m/s = v_i + 12 \ m/s -12 \ m/s[/tex]
[tex]4 \ m/s = v_i[/tex]
The cyclist's initial velocity is 4 meters per second.
three examples of situations in which mass is the main factor determining an object's momentum?
Situations in which mass of an object is the main factor of momentum are :
A three wheeled vehicle at relatively fast speedA truck moving at a relatively average speed A baseball on motion Factors affecting momentumThe factors that have a direct effect on an object's momentum are ;
Speed/ velocity MassDirection ( where necessary )The momentum of an object is determined by the multiplication of the mass of object by its velocity/speed. therefore some examples of situation in which mass is a main factor determining momentum are as listed above.
p ( momentum ) = M* V
Learn more about momentum : https://brainly.com/question/7538238
Which best describes the forces identified by newton’s third law of motion?.
Answer:
Equal in magnitude and acting on different objects.
Action/reaction forces.
Explanation:
is conveyor belt used to DECREASE friftion. True or false
8) Farah and Athena were attempting to push Kieran on the scooter with enough force so
that Kieran would run into Mr. Collins. They figured out they needed a 50 N force to run
the scooter into Mr. Collins. Farah and Athena were both applying force from the left,
Farah applying a 20 N force and Athena pushing with a force of 15 N. Were they able to
get Kieran to run into Mr. Collins?
How can they get it to hit him?
A. They were not able to get Kieran to run into Mr. Collins
B. They will need an extra force of 15 N in order to hit him.
A. How to determine if they will hit Mr. CollinsFrom the question given above, the following data were obtained:
Force 1 (F₁) from the left = 20 NForce 2 (F₂) from the left = 15 NForce needed (F) = 50 NNet force (Fₙ) =?Fₙ = F₁ + F₂
Fₙ = 20 + 15
Fₙ = 35 N
From the question given above, the force needed to hit Mr. Collins is 50 N.
Thus, we can conclude that they were not able to hit him since their combined force is less than 50 N (i.e 35 N)
B. How to determine the extra force needed Force needed (F) = 50 NNet force (Fₙ) = 35 NExtra force needed =?
Extra force needed = Force needed – Net force
Extra force needed = 50 – 35
Extra force needed = 15 N
Thus, they will need an extra force of 15 N to hit Mr. Collins
Learn more about net force:
https://brainly.com/question/14361879
Why do atoms form chemical bonds? group of answer choices.
A small bug walks up a wall 2 m. The bug then walks 2 m down the wall. What is the distance?
If an 800 kg roller coaster is at the top of its 50 m high trackit will have a potential energy pf 392,000 J and a kinetic energy of J. This means the total mechanical energy is 392, 000J the cart drops down to where its kinetic energy is now 392,000 Jhow high off the ground is the cart now?
Answer: 0 m
Explanation: PEi + KEi = PEf + KEf
Since PEi equals 392,000 and KEi equals 0 at 50m high, the total energy is 392,000.
392,000 = 392,000 + PEf
PEf = 0
Since PEf is 0J, h is also zero
a pingpong ball has 2 kg m/s of momentum when thrown 8 m/s find the mass of the ball
Answer:
0.25 kg
Explanation:
p = mv
2 = m(8)
2/8 = m(8)/8 *cancels
m = 1/4 OR 0.25 kg
Which of the following objects can be described as simple harmonic motion? Pick Two
A)A dog chasing his tail
B)A butterfly flapping its wings
C)A car driving on a highway
D)A cat eating asparagus
Which is NOT an example of matter?
Group of answer choices
whisper
cloud
air
apple
Answer:
whisper is not a Matter its a sound
Answer:
Whisper
Explanation:
A whisper is not made of a substance, it is simply a sound. A cloud is mad of particles, making it matter. Same for air and an apple. Hope this helps you.
A cross-country skier can complete a 7. 5 km race in 45 min. What is the skier’s average speed? km/h.
The average speed is a scalar quantity. The average speed of the skier is 10 km/hrs.
What is the average speed?
It is calculated by dividing the total distance by the total time elapsed.
The
[tex]\overline{v}={\frac{\Delta x}{\Delta t}}[/tex]
Where,
[tex]\overline{v}[/tex] = average velocity
[tex]{\Delta x}[/tex] = displacement = 7.5 km
[tex]{\Delta t}[/tex] = change in time = 45 min = 0.75 hours
Put the values in the formula,
[tex]\overline{v}={\frac{7.5 }{0.75 }}\\\\\overline{v}= 10 \rm \ km/hrs[/tex]
Therefore, the average speed of the skier is 10 km/hrs.
Learn more about average speed:
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"The energy conversions that take place from the time the plunger is pushed down to the time the explosives detonate are from..."
Answer:
mechanical to electrical to chemical
Explanation:
