Answer:
F = Gm1m2/r^2 where G = 6.67x10^-11, m1 =1300, m2 = 7800, r = 0.23m
F = 6.67x10^-11 *1300*7800/(0.23)^2 = 0.0127852N
Explanation:
Kyle runs 20 m north, 20 m west and then 20 m south, what is Kyles’s total displacement?
Answer:
Displacement = 20 m
Explanation:
Given that,
Kyle runs 20 m north, 20 m west and then 20 m south.
We need to find Kyles's total displacement.
Total distance = shortest path covered by Kyles.
The net displacement of Kyle is 20 m in east direction. Hence, this is the required solution.
A boy and a girl are balanced on a massless seesaw. The boy has a mass of 75 kg and the girl's mass is 50 kg. If the boy sits 2.0 m from the pivot point on one side of the seesaw, where must the girl sit on the other side?
Answer:
The girl must sit 5 m on the other side of the seesaw.
Explanation:
Given;
mass of the boy, = 75 kg
mass of the girl, = 50 kg
distance of the boy from the pivot, = 2 m
let the distance of the girl from the pivot = d
<-------------2m-------------><-------------d-------------->
-----------------------------------------------------------------------------------
↓ Δ ↓
75 50
Apply the principle of moment, about the pivot;
clockwise moment = anticlockwise moment
75 x 2 = 50 x d
150 = 50d
d = 150 / 50
d = 3 m
The distance of the girl from the pivot is 3 m.
Therefore, the girl must sit ( 2m + 3m ) on the other side of the seesaw.
Which is a possible result of higher air temperatures caused by global warming?
increase in sea level
freezing of polar ice caps
rapid evaporation of water in the soil
flooding of low-lying coastal areas
Answer: C. rapid evaporation of water in the soil :)
A possible result of higher air temperatures caused by global warming is rapid evaporation of water in the soil.
What is global warming and its causes and consequences?Global warming is a phenomenon that has been registered around the world during the last decades. It refers to a progressive increase in the average temperatures of the oceans and the Earth's atmosphere, which has consequences for flora and fauna, in addition to impacting critical sectors such as agribusiness.
Among the consequences of global warming are melting ice, rising sea levels, desertification, changes in rainfall, floods and reduced biodiversity.
See more about global warming at brainly.com/question/12908180
If a car is traveling forward at 15 M/S, how fast will be going in 1.2 seconds if the acceleration is 10 M/s2?
Answer:
Vf=27m/s
Explanation:
Vf=Vi+at
Lets substitute the known variables into the equation:
Vf=15+10×1.2
Vf=27m/s
So itll be going 27metres per second
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Acceleration Due to Gravity - Free Fall
V=V;+gt
vir initial velocity (m/s)
=final velocity (m/s)
g=gravity (10 m/s2)
t = time (s)
1. What is the velocity of a dropped object after it has fallen
downward for 3.0s?
V=V;+gt
Vi = 0
8 = 10
t = 3
2. A brick is thrown down off a bridge with a velocity of 5 m/s. What
is its velocity after it has fallen for 2 seconds?
I
3. An arrow is launched straight up from the ground. It reaches its
highest point in 6 s. What velocity was it released at?
a b c d
A V=V+gt
dhehehdhehdhshehehehehehe
What is a 60 kg car's velocity if it has a momentum of 2400 kg m/s?
Answer:
40m/s
Explanation:
momentum = mass * velocity
momentum / mass = velocity
2400kg*m/s / 60kg = 40m/s
1. When the two cars have the same mass, what is true about their
velocities?
Answer:
I mean they have the same amount of velocity
Rahul runs a distance of 12
km with an average speed of 4.5 km/h and
Rita runs 1.6 km within 15 minutes. Who
runs faster?
Answer:
Rita runs faster
Explanation:
To obtain the answer to the question given, we determine the speed of Rita. This can be obtained as follow:
Distance = 1.6 km
Time = 15 mins
Speed =?
Next, we shall convert 15 mins to hour. This can be obtained as follow:
60 mins = 1 h
Therefore,
15 mins = 15 mins × 1 h / 60 mins
15 mins = 0.25 h
Thus, 15 mins is equivalent to 0.25 h.
Finally, we shall determine speed of Rita as follow:
Distance = 1.6 km
Time = 0.25 h
Speed =?
Speed = distance / time
Speed = 1.6 / 0.25
Speed = 6.4 Km/h
Thus Rita's speed is 6.4 Km/h
Comparing the speed of Rahul and Rita
Rahul's speed = 4.5 km/h
Rita's speed = 6.4 Km/h
We can see that Rita's speed is greater than Rahul's speed. This simply indicates that Rita runs faster than Rahul.
Question 4 of 10
If infrared waves can move information through air, what is the advantage of
sending their signals through networks of cables?
A. Cables are easy to maintain.
B. These waves need to travel only short distances.
C. Cables transmit infrared waves over longer distances.
O D. The denser the medium, the faster the wave.
Answer:
C. Cables transmit infrared waves over longer distances.
Explanation:
A.pex
Answer:
The answer is C.Cables transmit infrared waves over longer distances.
Explanation:
I took AP EX quiz.
In the water cycle, water travels from bodies of water to the ____________. Then it travels back to the ground and to the oceans.
soil
mountains
air
lithosphere
Answer:
air
Explanation:
Water bodies are already found on the Earth's surface made up of soil which is part of the lithosphere
Kinetic energy and mass are ________ proportional.
Answer:
The Kinetic energy and mass are _directly_ proportional.
Explanation:
We know that Kinetic Energy is basically termed as the capacity of a body to do work.
Kinetic energy is often used to associate with moving objects, therefore, K.E is normally termed as the energy of motion.
The formula of K.E of an object of mass and velocity is defined
K.E = 1/2mv²
From the formula, it is clear that K.E is directly proportional to its mass and also directly proportional to the square of its velocity.
For example,
If A toy plane with a mass of 10 kg is flying at 20 m/s. Its K.E will be:
m = 10 kgv = 20 m/sK.E = 1/2mv²
= 1/2(10)(20)²
= 1/2(10)(400)
= 5(400)
= 2000 J
Now, let suppose, if we double the mass of a toy plane i.e.
m = 20 kg
so
K.E = 1/2mv²
= 1/2(20)(20)²
= 1/2(20)(400)
= 10(400)
= 400 J
Therefore, the K.E is doubled when doubled the mass.
Therefore, the Kinetic energy and mass are _directly_ proportional.
Answer:
directly
Explanation:
A crate of books is dragged horizontally across a rought floor at a constant
velocity. If the normal force acting on the crate is 66 Newtons, determine the
mass of the crate.
Answer:
m = 6.73 kg
Explanation:
Given that,
The normal force acting on the crate = 66 N
We need to find the mass of the crate.
Normal force = weight of the crate
N = mg
m is mass of the crate
[tex]m=\dfrac{N}{g}\\\\m=\dfrac{66}{9.8}\\\\m=6.73\ kg[/tex]
So, the mass of the carte is 6.73 kg.
What is the direction of the net force when one force is pulling down and one force is pushing to the right?
Answer: If the net force on an object is zero, its acceleration will be zero. For example in free fall, the net force on an object equals its weight - the one force pulling on it. If 2 forces push or pull on an object in opposite directions, and the two forces cancel .
Explanation: PLEASE MARK ME AS BRAINLIEST!
We have that the direction of the net force when one force is pulling down and one force is pushing to the right is given as
[tex]\theta=tan^{-1}(\frac{Down force}{Right force})[/tex]
From the question we are told that:
One force is pulling down and one force is pushing to the right
Generally,
When two or more forces are acting in the same direction we have that the Resultant for or net for is a sum of the forces involved
Therefore
When one force is pulling down and one force is pushing to the right the Net force is in a direction that obeys the law
[tex]\theta=tan^{-1}\frac{y-axis\ force}{x-axis\ force}[/tex]
Therefore
[tex]\theta=tan^{-1}(\frac{Down force}{Right force})[/tex]
In conclusion
The direction of the net force when one force is pulling down and one force is pushing to the right is given as
[tex]\theta=tan^{-1}(\frac{Down force}{Right force})[/tex]
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what is 1=1?????????????????????????????//// HELP
Answer:
I am pretty sure that it is one
Answer:
Explanation: is 1
HELP!! I’m DESPERATE!! 19 POINTS!!!
Which action might lead scientists to develop new explanations about the
universe?
A. Becoming familiar with the history of space exploration
O B. Speculating on whether conditions on other planets might support
life
O C. Developing new technologies designed to see farther into space
than before
D. Wondering about the present size and shape of the universe and
how it formed
c. Developing new technologies designed to see farther into space
than before
What is universe?The universe is everything including all of space, and all the matter and energy that space contains. Also it includes time itself and, of course, it includes us.
What began as a sequence one-upmanship in space-related technological advancements between the U.S. and the Soviet Union would spawn incredible progress observed in innovation to this day. The battle for dominance not only as a global superpower, but a space power, led the United States and the Soviet Union to race to put men in space and eventually on the moon.
The launch of the Soviet satellite Sputnik on Oct. 4, 1957, would place pressure on the U.S. to design technologies crafted for space exploration. This, in turn, spurred a series of innovations in technology that would have far reaching impacts beyond space.
These technologies can be seen as developments in modern healthcare, construction, and transportation. Relevant examples include medical imaging techniques, artificial limbs, water filtration systems, solar panels, firefighting equipment, shock absorbers, air purifiers, home insulation, weather resistant airplanes, infrared thermometers, and countless other vital inventions.
While all these creations help sustain essential aspects of modern life, we carry one of the largest technological advancements from the space race in our pockets today.
Therefore, Developing new technologies designed to see farther into space than before lead scientists to develop new explanations about the universe.
Learn more about universe here:https://brainly.com/question/15844073
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What is the acceleration for an object moving with constant speed? Explain your answer
Answer:
What is the acceleration of an object moving at a constant speed?
The Meaning of Constant Acceleration
The data table above show an object changing its velocity by 10 m/s in each consecutive second. This is referred to as a constant acceleration since the velocity is changing by a constant amount each second.
Answer:
there is no acceleration for an object moving with constant speed
Explanation:
it is because acceleration is change in velocity and constant means same or without any change so there is no acceleration for an object which is moving with same speed
hope it helps:)
Help me plz i'll mark brainliest
Answer:
a PDF is what u use to upload an assignment to turn it in to get graded
A 240 kg crate full of bricks is pushed across a surface with an acceleration of 1.3
m/s2. If the crate travels a distance of 4.6 m, How much work is being done?
Answer:
Workdone = 1435.2N/m
Explanation:
Given the following data;
Mass = 240kg
Acceleration = 1.3m/s²
Distance = 4.6m
To find the force;
Force = mass* acceleration
Substituting into the equation, we have;
Force = 240 * 1.3
Force = 312N
Now, to find the workdone;
Workdone = force * distance
Workdone = 312 * 4.6
Workdone = 1435.2N/m
Explain in detail how educational institutions and personal ideology affect the influence of contemporary psychological
perspectives.
Answer:
Educational institutions can influence what psychological perspectives are taught, studied, and researched. Take, for example, behaviorism. Before the cognitive perspective re-emerged, behaviorism was the dominant perspective being taught in most universities. Personal ideology can also affect which perspective a psychologist supports, the course of research a psychologist undertakes, and also a psychologist's perception and interpretation of research findings. For example, during the dominance of behaviorism, psychologists were discouraged from studying cognitive processes. As a result, much of the research conducted had a behaviorist slant to it.
Explanation:
Two balls, a foam ball and a golf ball, are placed into a pail of water. The golf ball sinks. Why does a foam ball float and a golf ball sink when both are placed into water?
Answer:
The golf ball has a greater mass than the foam ball
Explanation:
Is this right? Please help me
Answer:
variable
Explanation:
meaning diffent
What acceleration is produced when a 3000 N force acts on a 1,200 kg car?
I think you have to do 3000n times 1200kg an that will get ur answer
help pls .. Which process produces the energy that powers a solar calculator?
Answer:
C) Nuclear fusion
Explanation: You had it correct
Answer:
Nuclear fusion
Explanation: Answer choice C
b. Find the centripetal force needed to keep an 60.0 kg rider traveling in a circle in the ride.
Given:
m =
v = (from part a)
r=
Unknown:
F=?
Equation:
F= m (v^2) / r
Answer:
loloololo
lol
Explanation:
lolloolololo
A person who is heavier than the standard for the person’s height is _____
A. overweight.
B. obese.
C. hefty.
D. extremely obese.
Answer:
A. overweight
Explanation:
Answer:
c
Explanation:
since of his lack of growing his body dont know what to do with the needed fat so while he's still growing its in his tummy waiting
While riding her bike, Ms. Parker average a velocity of 20m/s. If she maintains that velocity for a time of 20 seconds, how far does she rides?
Answer:
400 m
Explanation:
20m/s x 20s = 400m
a 950 N skydiver jumps from an altitude of 3000 m. What is the total work performed on the skydiver?
Answer:
2850000J
Explanation:
Given parameters:
Weight of diver = 950N
Altitude = 3000N
Unknown:
Total work done by the sky diver = ?
Solution:
To solve this problem, we use the expression:
Work done = Weight x height
Now insert the parameters:
Work done = 950 x 3000 = 2850000J
Item 1 Circuit A has a resistance of 7.5 ohms, and circuit B has a resistance of 5 ohms. Which statement about the circuits must be correct? (1 point) Item 2 Item 3 If the current in circuit A is less than the current in circuit B, then the voltage in circuit A is less than the voltage in circuit B. Item 4 If the voltage of circuit A is equal to the voltage of circuit B, then the current in circuit A is less than the current in circuit B. If the current in circuit A is equal to the current in circuit B, then the voltage in circuit A is less than the voltage in circuit B. If the voltage of circuit A is equal to the voltage of circuit B, then the current in circuit A is equal to the current in circuit B. 0 Type here to search е c
Answer:
e4atetetsgts4tgesetse
Explanation:
ger54ttagcuit B, then the voltage in circuit A is less than the voltage in circuit B. Item 4 If the voltage of circuit A is equal to the voltage of circuit B, then the current in circuit A is less than the current in circuit B. If the current in circuit A is equal to the current in circuit B, then the voltage in circuit A is less than the voltage in circuit B. If the voltage of circuit A is equal to the voltage of circuit B, then the current in circuit A is equal to the current in circuit B. 0 Type here to search е c
Please Help Me!!!!!!
Answer:
a.
Explanation:
What accommodations can be made for people with impaired vision?