Answer:
The correct choice is A. She should just create a long-term goal.
If the 10v battery were replaced by a 15v battery would the current through the 70-ohm resistor increase decrease or remain the same?
Answer:
I think it would increase sorry if I'm wrong
Question 10..help me
Answer:
Go to high ground, as high as possible.
How long it takes Earth to rotate on its axis?
Answer:24 hours
The time it takes Earth to rotate so the sun appears in the same position in the sky, known as a solar day, is 24 hours. However, the time it takes Earth to complete one full rotation on its axis with respect to distant stars is actually 23 hours 56 minutes 4.091 seconds, known as a sidereal day.
Explanation:
Answer: 24 hours
The time it takes Earth to rotate so the sun appears in the same position in the sky, known as a solar day, is 24 hours. However, the time it takes Earth to complete one full rotation on its axis with respect to distant stars is actually 23 hours 56 minutes 4.091 seconds, known as a sidereal day.
Explanation:
a car traveling at 60m/s accelerates at 2 m/s for 30s.calculate how far it has traveled during this time
Answer:
2,7 km
Explanation:
You should remember from theory that
[tex]s=s_0 + v_0\Delta t + \frac12 a(\Delta t)^2[/tex]. Let's substitute values, remembering that we are interested in the difference in position [tex]\Delta s = s-s_0[/tex]
[tex]\Delta s = 60(30) +\frac12 2 (30)^2 = 2700m[/tex]
Answer:
it's average acceleration is 12 mph
Please help me please be correct.
Answer: A
Explanation: They would not be planting weeds or digging up the tree, the person on the left in the picture is pouring water on the tree implying that they are taking planting it.
Astronomers now think that there is a black hole with more than 4 million times the mass of our Sun at the center of our Galaxy? Roughly how large would the event horizon of such a supermassive black hole be? a. the size of our Moon b. about 4 light years across c. about 17 times the size of the Sun d. about the size of an atom (so much mass really compresses the event horizon) e. we can’t answer this question without knowing exactly what kind of stars were swallowed by the black hole
Given what we know about the astronomical units of space occupied by supermassive black holes, we can confirm that the event horizon in question is roughly 24million km across. Though no option given evaluates to this number, the closest is option c "about 17 times the size of the sun", which equates to the radius of the event horizon.
When comparing sizes, the universe can quickly make even the most massive object appear to be very small. The sun, which is large enough to make the earth look like a speck of dust in comparison, is roughly 700,000 km across. Though this is indeed a massive distance, it is only 1/35th the size of the event horizon in question.
The "Supermassive Black Hole" at the center of our galaxy is known as Saggitarius A. This black hole is said to be 4 million times the mass of our sun. Despite this, however, due to the highly compressed nature of black holes, it is only about 35 times larger than our sun. Option C comes close at 17 times larger but is only about half of what the event horizon for this black hole is.
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how much energy is needed to heat 2kg of cooking oil with a specific heat capacity of 2000j/kg°c from 20°c to 120°c
Answer:
400kj
Explanation:
h =mass × specific heat capacity × change in temperature
= 2×2000×[120-20]
=2×2000×100
=400000j
=400kj
400kj of energy is needed.
Energy:Energy, which is observable in the execution of labor as well as in the form of heat and light, is the quantitative quality that is transferred to a body or to a physical system in physics. Energy can be transformed in form but cannot be created or destroyed, according to the rule of conservation of energy. The joule, which is the energy supplied to an object by the labor of moving it a distance of one meter against a force of one newton, is the unit of measurement for energy in the International System of Units (SI).Cooking oil:Cooking oil is a liquid fat made of plants, animals, or synthetic materials that are used in baking, frying, and other cooking processes. It may also be referred to as edible oil because it is used in cold food preparation and flavoring, including salad dressings and bread dips.At room temperature, cooking oil is normally a liquid, although some saturated-fat oils, such as coconut oil, palm oil, and palm kernel oil, are solids.Solution -Formula - h = mass × specific heat capacity × change in temperature
So,
[tex]2[/tex] × [tex]2000[/tex] × [tex][120-20][/tex]
[tex]2[/tex] × [tex]2000[/tex] × [tex]100[/tex]
[tex]=400000j\\=400kj[/tex]
Therefore, 400kj of energy is needed.
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PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
Maurice spends a lot of time watching television and films. He can’t help but notice that the men in the action movies that he loves are always very toned. He goes to the gym a few times a week, but his abs are nowhere near what he sees in these shows. What is the BEST advice for Maurice?
A.
He should recognize that celebrities often present unrealistic body images.
B.
He must weigh the positives of this kind of entertainment against the negative.
C.
He needs to spend hours every day like celebrities do to get the body he wants.
D.
He should stop watching this kind of media all together since it creates problems.
PLEASE NO LINKS
Answer:
A
Explanation:
The best advice for Maurice is he should recognize that celebrities often present unrealistic body images. The correct option is A.
What is advice?A suggestion made to you by someone regarding what to do or how to act in a specific circumstance: Steven offered me some wise counsel. I believe I will heed your counsel and purchase the green dress. Can I offer you some advice? I require assistance choosing a PC.
Body Dysmorphic Disorder is a condition where “imagined ugliness” is present. People who have this disease perceive a wildly distorted version of themselves when they look in the mirror.
These people frequently spend hours scrutinizing, trying to hide, or worrying about their perceived shortcomings.
Therefore, the correct option is A. He should recognize that celebrities often present unrealistic body images.
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What is electromagnetic radiation and what is it composed of?
Answer:
At the classical level, the electromagnetic radiation is composed of electric and magnetic fields oscillating in a plane perpendicular to the direction of propagation. At the quantum level, radiation is quantized in the form of massless particles of spin 1: photons
A net force of magnitude 0.6 at on a body of mass 40g intially at rest. calculate the magnitude of the resulting acceleration
→ 0.6 N = 0.04 kg × a
→ 0.6 kg.m/s² ÷ 0.04 kg = a
→ 15 m/s² = a
Therefore, tha magnitude of resulting acceleration is 15 m/s².
Calculate the maximum height a ball reaches when thrown straight up at a velocity of 10m/s
Answer:
5.1m
Explanation:
Use the fourth key equation of accelerated motion
vf^2=vi^2+2aΔd
we know vf is = 0 because that is when the ball reaches it's peak (not going up anymore)
0=vi^2+2aΔd
and we can rearrange for Δd, which is what you need
-vi^2=2aΔd
Δd = -vi^2/2a
Now we can plug in the values
Δd = -vi^2/2a
Δd = -(10m/s)^2/2(-9.8)
Δd = -100/-18.6
Δd = 5.10m
What is the name of a hypothesis that has passed the test of many experiments and has support of other scientists
Answer: Scientific Hypothesis
Explanation: A scientific hypothesis is something supported or approved by a line of scientists through experiments and close observations.
how does the amount of friction affect the sum of forces
Answer:
Newton's 2nd law states acceleration is proportional to the net force acting on an object. The net force is the vector sum of all the forces applied to the object. ... In this case the acceleration (slowing down) of the puck is proportional to the amount of friction.Explanation:
mark as brainliastis the following statement true or false? the light wave from a bulb is an example of a periodic wave.
Answer:
true
Explanation:
Can you please help the question is in an attatchment
Answer:
b because it's b so pick b
Consuming the right amount of calcium is necessary for strong bones.
true
false
Answer:
True
Explanation:
I ball is thrown straight up. At the top of its path, what is its acceleration?
0 m/s^2.
O 5 m/s^2
O 10 m/s^2
20 m/s^2.
katherine johnson’s skill in what field led to nasa’s first moon voyage?
The length of a certain wire is kept same while its radius is doubled. What is the new resistance of this wire
Answer:
R = K L / A resistance proportional to length and inversely proportional
to area
R2 / R1 = A1 / A2 = A1 / (4 A1) = 1 / 4
R2 = R1! / 4
Which two forces operate over the longest distances?
A. Gravitational and weak nuclear
B. Electromagnetic and weak nuclear
C. Gravitational and strong nuclear
D. Electromagnetic and gravitational
Answer:
D Electromagnetic and gravitational
suppose that a white dwarf is gaining mass through accretion in a binary system. what happens if the mass someday reaches the 1.4 solar mass limit?
Answer:
Hey there
When a white dwarf reaches 1.4 solar masses it implodes and becomes a neutron star. this mass limit is known as the "Chandrasekhar limit". It occurs when electron degeneracy pressure (the force that keeps the star from collapsing) is no longer strong enough to hold up aggainsed gravity.
A Person drops a pile of roof shingles from the top of a roof above the ground. If the time taken to reach the ground was 5 seconds, how high is the roof?
Correct answer get BRAINLIEST and please don’t answer if u don’t know
Answer:
The height of the roof is 4 meters high. Is this the measurement that I was supposed to answer with?
Explanation:
1) In which of these examples is the greatest movement occurring? A) A B) B C) C D) D
Answer:d
Explanation:
A kettle transfers 1,500 J of energy, 1,200 J to a thermal energy store and 300 J to a vibrational energy store (sound). How efficient is the kettle?
Answer:
[tex]\eta = 0.8 = 80\%[/tex]
Explanation:
Efficency of a machine is defined as the ratio of "useful" energy over the total energy imput in it. In this case a kettle wants to heat water, so thermal energy is what we need; if we wanted to build some kind of music instrument, we would be looking at the energy generating vibrations.
[tex]\eta = \frac{1200J}{1500J} = 0.8[/tex]
7. A car is
speeding up
with a force of
a
120 N, heading
East. The
force of
friction acts
against the car
with a force of
80 N West.
What is the net
force?
Answer:Fricition
Explanation: It is fricition in the net force
A car is speeding up with a force of 120 mph and heading east. The force of friction acts against the car with a force of 80 N westward, and the net force acting on the car is 40 N eastward, which means the car is accelerating eastward with a force of 40 N.
What is the calculation of net force?To calculate the net force acting on the car, one needs to consider the direction and magnitude of the forces acting on it. A force of 120 N to the east is acting to accelerate the car in that direction, and a force of 80 N to the west is acting to oppose the motion of the car.
Net force = force of acceleration -force of friction.
Net force = 120 N east- 80 N west.
Net force = 40 N East
Hence, the net force acting on the car is 40 N eastward, which means the car is accelerating eastward with a force of 40 N.
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How much force is needed to accelerate a. 15 kg mass at 20 m/s2.
Answer:
F = 300 N
Explanation:
This is an example of Newton's second Law
F = m * a
F = ?
m = 15 kg
a = 20 m^2
F = 20 * 15
F = 300 Newtons.
Which of the mathematical sign below would best complete the following statement?
Statement: 5cm______ km
A. >
B.<
C. =
PLS HELP AND NO LINKS
Answer:
B
Explanation:
option b stands for less down and cm is less than km
how far from the base of the cliff would the driver have landed if the driver initially had been moving horizontally with speed 10 m/s?
Answer:
C
Explanation:
y0=100 m
y=0
x0=0
x=?
v0x=10 m/s (moving horizontally)
v0y=0
x=x0+v0xt
x=10t
y=y0+1/2at^2
solve for t
0=y0-1/2gt^2
(a is acceleration which is - gravitational acceleration )
t=[tex]\sqrt{\frac{2y0}{g} }[/tex]
plug into x equation
x=10([tex]\sqrt{\frac{2y0}{g} }[/tex]) where y0=100m and g=9.80 m/s^2
x= 45.2 m
if you check the distance when v0=5 m/s, we get x=22.5 m so the equation is correct. however if the g your class uses is 10.00 m/s^2, then we get x=22.4 for the first velocity and 44.7 for the second velocity
HELP PLEASE I KEEP ASKING THIS QUESTION BUT GET DIFFERENT ANSWERS EACH TIME!!!!!
Answer: a
The wagon appears as a red color because red light is reflected.
:)
A 800 Kg car and driver accelerates at a rate of 35 m/s/s. What force is necessary to bring the car to a complete stop?
Answer:
Your answer would be 28,000 N (newtons).
Explanation:
We'd simply get this by using the formula:
force = mass × acceleration
The information that we have from the question is that the force is 800 times 35.
Now, all we have to do is multiply 800 by 35, and we have our answer of 28,000 N.
I hope I helped, and a Brainliest is always appreciated! ☺
