Answer:
i believe
Explanation:
i do
i believe in themmm
the mass of a lump of gold is constant everywhere but its weight is not explain these
Answer:
due to variations of the force of gravity from place to place
Explanation:
at different places we have different force of gravity...that's why weight change but mass never change
is there friction when an object stands still?
Answer:
No
Explanation:
The gravitational force always acts opposite the direction of motion. Air resistance only acts on objects that are moving. The force of friction does not exist when an object is stationary. All objects experience a normal force.
btw pls mark as branliest! Thanks!
name two possible ways in wivh fossils can be dated and define them
Answer:
There are two main methods determining a fossils age, relative dating and absolute dating. Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages.
Mark me with a crown
Answer: dna
Explanation:
sorry if this is wrong lol
If 30 wave crests pass by you in 10 seconds, what is the wave’s frequency?
what is electricity
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations.
a form of energy resulting from the existence of charged particles (such as electrons or protons), either statically as an accumulation of charge or dynamically as a current.
Hope this helps
look at picture, need to know net force, whether they are balanced or unbalanced and whether they are accelerated or not accelerated!
Answer:
1) 100 ...unb. and accelerate
2) 7...unb. and accelerate
Pythagoras theorem is used to find the resultant force when angle between 2 forces is _________ degrees. asap
0
45
90
180
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
Pythagoras theorem is used to find the resultant force when angle between 2 forces is 90 degrees ~
What is the power of a crane that lifts a 120 N load 14 m in 3.6 s?
Answer:
1000n
Explanation:
hop it helps
Answer:
467 watts
Explanation:
Power is = to work/time. Work is = to force (N) times distance from starting point. So first, calculate work. 120N x14m , which is equal to 1680 joules. so then plug it into your power formula. 1680 joules/ 3.6 seconds= 466.666...7, which rounds to 467 watts.
A 2100 kg car starts from rest at the top of a driveway 5.0 m long that is sloped at 20.0 degrees with the horizontal. If an average friction force of 4000 N impedes the motion, what is the speed of the car at the bottom of the driveway?
Answer:
h = 5*sin20 = 1.71 m.
PE = mgh = 2100*9.8*1.71 = 35,192 J.
KE = PE-Fk*d.
0.5mV^2 = 35192 - 4000*5
1050V^2 = 15,192
V^2 = 14.47
V = 3.80 m/s.
NEED HELP!!! ANSWER THESE 5 QUESTIONS FOR 25 POINTS!!!! PLEASE ANSWER!! I WILL GIVE YOU BRAINEST
1. Jerome explains to his doctor that because he spends a lot of time at his desk, he makes sure that his chair supports good posture. But when he is home, he spends his time on an old, squishy couch that offers very little support. He figures that since he spends most of his time at work, he does not need to worry about his home furniture as much. How would Jerome’s doctor MOST likely reply?
A.
Jerome’s thinking is correct since he spends most of his time at work.
B.
Jerome should bring his chair from work home with him on the weekend.
C.
If Jerome’s standing posture is good, he does not have to worry about his seated posture.
D.
Sitting properly is important in all contexts, so Jerome should consider his seating at home.
2. Guillermo has decided that he wants to be healthier, so he starts jogging. He has been at it for a week, but he is getting frustrated because he cannot run very far without getting out of breath. He is beginning to think that this is not a good exercise for him since he is not very good at it. What BEST explains why Guillermo is struggling?
A.
He probably does not have good form when he is exercising.
B.
He likely has heart or lung problems that he was not aware of.
C.
He does not have much endurance since he is new to exercise.
D.
He is just not good at jogging and needs to try something else.
3. Which is the BEST example of the kind of mechanics that are studied in sports biometrics?
A.
the average attendance at a sporting event
B.
how a new sport becomes popular in a community
C.
the movement of the wrist when hitting a tennis ball
D.
the median height of the most successful hockey goalies
4. Ewan had a resting heart rate of about 110. What does this indicate?
A.
His heart rate is perfectly average.
B.
He probably has a high metabolism.
C.
He needs to work on raising his resting heart rate.
D.
His heart rate is high and could indicate a problem.
5. Why is acceptance an important part of building a healthy lifestyle?
A.
Exercise will probably not change much in your life.
B.
Healthy lifestyles often create a lot of disappointment.
C.
If you understand your limitations, you are less likely to be frustrated.
D.
Finding the energy to exercise can be hard, so you should limit your goals.
PLEASE NO LINKS
Please if you can give an explanation and not just the answer.
Answer:
what you perfect Wuman in the world just try and try I wish you get it just trust me I'm a Wuman and man
100 POINTS!! PLEASE DONT ANSWER UNLESS YOU KNOW BOTH ANSWERS PLEASE.
If a bike hits a rock and suddenly stops, the rider flies over the handlebars due to ________.
A. absolute zero B. displacement C. inertia D. electromagnetic spectrum
During a track meet, Sarah ran 400m in 80s. What was her average speed? (Remember s=d/t)
A. 5 m/s
B. 20 m/s
C. 15 m/s
D. 15 mph
Answer:
1. is B and 2. is A
Explanation:
Answer:
1. Displacement
2. 5 m/s 400 ÷ 80 = 5
Explanation:
An athlete spins in a circle and throws a 1.6-kg discus. The radius of the discus's path is 1.0 m, and he releases it with an angular speed of 15.0 rad/s. The athlete spins for a total of 1.2 s before releasing the discus.
– What is the tangential speed of the discus at release?
– What is the centripetal acceleration of the discus?
– What is the centripetal force on the discus?
giving Brainliest for full and proper answers! thank you for anyone who tries to help/explain :)
(a) The tangential speed of the discus at the release is 15 m/s.
(b) The centripetal acceleration of the discus is 225 m/s².
(c) The centripetal force on the discus is 360 N.
The given parameters;
mass of the discus, m = 1.6 kgradius of the path, r = 1 mangular speed, ω = 15 rad/stime of motion, t = 1.2 sThe tangential speed of the discus at the release is calculated as follows;
[tex]v = \omega r\\\\v = 15 \ rad/s \ \times 1 \ m\\\\v = 15 \ m/s[/tex]
The centripetal acceleration of the discus is calculated as follows;
[tex]a_c = \frac{v^2}{r} \\\\a_c = \frac{15^2}{1} \\\\a _c = 225 \ m/s^2[/tex]
The centripetal force on the discus is calculated as follows;
[tex]F_c = ma_c\\\\F_c = 1.6 \times 225\\\\F_c = 360 \ N[/tex]
Learn more here:https://brainly.com/question/11700262
If you added enough ropes and pulleys to lift any size mass would it be possible to never have to apply a force to move your mass? Why or Why Not? Explain your answer using scientific terms we have been learning.
pls help!!
Answer:
we have to apply force to move something things wants to save their position and if we want to change it
we have too apply force
Answer:
we have to apply
them to have a answer
helppppppp meeee please
Answer:
B.X substance = sulfur dioxide, Y substances = sodium carbonate
Explanation:
sorry for wrong because that is my predicted
a concave mirror is used as a reflector in torch why
Answer:
A concave mirror is used in torch lights because the light ray from the source is placed on the focus of a concave mirror.
a 1 kg object accelerates at a rate of 5m/s2. calculate the net force on the object and explain how its motion is changing
Answer:
net force is 5N
Explanation:
Fnet= ma
Fnet= (1)(5)
Fnet= 5N
Fnet is for net force
Career discovery
English language art
Science
Studiesi
Answer:
you could become a science teacher and if you do english literature too then an english teacher
Explanation:
you will just need to get good GCSEs and if you want to you can further your education. e.g, college, university.
1.
Convert 450 km/h to m/s.
Answer:
Do you mean meter per second or Miles per second
Explanation:
If it is meter per second
125 meter per second
If it is miles per second
0.0776714 miles per second
What is the net force needed to accelerate a 1 kg textbook with an acceleration of
4 m/s2
Answer:
4 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question
mass = 1 kg
acceleration = 4 m/s²
We have
force = 1 × 4 = 4
We have the final answer as
4 NHope this helps you
the weight of a box having of 100 kg is __n
Answer:
mom
Explanation:
The force of gravity between two students is 3.5E-8 Newtons. If
the first students mass is 71.0 kg and the second students mass is
67.0 kg, how far apart must the students be from each other?
Answer:
r = 9521.29
Explanation:
Given:
Gravitational Force = [tex]3.5E-8[/tex] (Fg)
Student Mass 1 = 71 kg (M)
Student Mass 2 = 67kg (m)
Gravitational constant = [tex]6.67E-4[/tex] (G)
[tex]Fg=\frac{GMm}{r^{2} }[/tex]
[tex]r^{2} =\frac{GMm}{Fg}[/tex]
[tex]r^{2} =\frac{(6.67E-4)*(71)*(67)}{3.5E-8}[/tex]
[tex]r= \sqrt{90654828.57}[/tex]
[tex]r=9521.282927[/tex]
r = 9521.29
How do you find out the missing masses in a balloon
Answer:
How do you find out the missing masses in a balloon?
Well, actually you can't find the missing masses in a balloon. Why?
Because the mass of the mass of balloon, it can't see the mass of it, it only see if it the balloon is deflated or inflated.
Explanation:
Hope it helps
#LetsStudy
Two objects feel 200 N of force due to gravity between them. If the mass of one object was doubled, what would be the new force of gravity?
Answer:
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if a firework on the fourth of july is fired upwards from the ground with an initial speed of 200 m/s...
a. What is the total time the rocket spends ascending towards the sky?
b. How high up from the ground does the rocket travel?
(a) The time spent by the rocket ascending towards the sky is 20.4 s.
(b) The height traveled by the rocket from the ground is 2,040.8 m.
The given parameters:
initial speed of the firework, [tex]v_o[/tex] = 200 m/sThe time spent by the rocket ascending towards the sky is calculated as follows;
[tex]v_f = v_0 -gt[/tex]
where;
[tex]v_f[/tex] is the final velocity of the rocket at the maximum height
[tex]0 = v_0 -gt\\\\gt = v_0\\\\t = \frac{v_0}{g} \\\\t = \frac{200}{9.8} \\\\t = 20.4 \ s[/tex]
The height traveled by the rocket from the ground is calculated as follows;
[tex]h = v_0t - \frac{1}{2} gt^2\\\\h = 200(20.4) \ - \ \frac{1}{2} (9.8)(20.4)^2\\\\h = 2,040.8 \ m[/tex]
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2. A roller coaster moves 85 m horizontally, then travels 45 m at an angle of
30.0° above the horizontal. What is its displacement from its starting
point? Use graphical techniques.
Make a
claim about whether a mixture could be made
up of only elements and no compounds.
Summarize evidence to support the claim and
explain your reasoning.
Answer:
Yes, a mixture can be made up of just elements and no compounds. The elements never experiance a chemical interaction and stay only in physical contact with each other.
BRAILIEST PLS I NEED LEVEL UP!
QUICKLY PLZ
use map to answer this question.
Drag and drop the cities into the boxes to correctly complete the table.
Tropical Climate Drylands Subtropical Climate Continental Climate Polar Climate
Answer:
Tropical Climate: Bangkok and Cairo
Drylands: Nice, Sydney, and Buenos Aires
Subtropical Climate: Stockholm, Fairbanks, and Quebec
Continental Climate: Tiksi
Explanation:
An object has a acceleration of 10m/s^2 if the net force acting on this object were halved, what would the new acceleration of the object be
Answer:
As we increase the force on an object the acceleration increases proportionally. Since the mass does not change as the acceleration increases, we can say that force is equal to acceleration. Therefore, if you double the force you double the acceleration. ... Therefore, mass is inversely proportional to accelerationExplanation:I hope I helped you #learn from khabyIf an object has an acceleration of 10m/s^2 if the net force acting on this object were halved, then the acceleration of the object would become half as well because the force and the acceleration are directly proportional.
What is acceleration?
The rate of change of the velocity with respect to time is known as the acceleration of the object.
As given in the problem an object has an acceleration of 10 m/s^2 if the net force acting on this object were halved, then the new acceleration of the object be 5 meters / second².
Force = mass × acceleration
As the force is directly proportional to the acceleration of the object keeping the mass of the object constant.
Thus, the acceleration of the object would become 5 meters / second².
To learn more about acceleration from here, refer to the link;
brainly.com/question/2303856
#SPJ5
what is the thermal energy
Answer:
heat energy
Explanation:
heat is the flow of thermal energy. A whole branch of physics
