Answer:
The conventional wisdom of the digital era is that journalists can now know their audiences in far more intimate detail than at any other time in the history of the profession. Previously, journalists based their audience knowledge primarily on their closest social circles. Now, new tools can help them solicit readers’ feedback, analyze and understand readers’ behavior, and open new channels for conversation. These new capabilities promise to shine a light on the abstract audience — making one’s readers present, quantified and real
Một người tác dụng lên mặt sàn một áp suất 1,7.104N/m2. Diện tích của bàn chân tiếp xúc với mặt sàn là 0,03m2. Trọng lượng của người đó là.
Answer:
Hi, can you ask it in english only?
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option d
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A water bottle contains 15.0 ounces of water. A person drinks 0.5 ounces per minute. How many hours will it take to drink all of the water?
Study the ray diagram given below and select the correct option.
(a) Parallel to the incident ray
(b) Pass through F
(c) Appear to diverge from F
(d) Appear to diverge from C
Answer:
(a) Parallel to the incedent ray
The weight of a boy with a mass of 50 kg is
N. (Estimate 10
m/s2 forg)
Answer:
500N up........
.......
Equations for power
P=
W=
T=
Answer:
w= f*x (x is distance) (f is force)
t= time
P= w/t
A grandfather clock keeps time using a pendulum. Which will be true of the clock if the pendulum is shortened? Question 10 options:
It will run slow.
It will run fast.
It will keep the same time.
It will depend on the bob’s mass.
Answer: The period of the pendulum is shorter if the pendulum itself is shortened.
Explanation: i did "It will depend on the bob’s mass". and got it wrong so it's not that one haha
an elevator suspended by a vertical cable is moving downward but slowing down. the tension in the cable must be:
Answer:
F = M a is the vector equation involved
F = T - M g are the forces acting on the elevator (scalar equation)
T - M g = M a
T = M (a + g) remember this a scalar
If a is slowing down then it must have a positive acceleration upwards
Therefor the tension in the cable must be greater than zero
When the tension increases to M g, a has increased to zero
For a to be zero, no acceleration, T = M g
Can someone please give me the answers to this? ... please ...
Answer:
See below:
Explanation:
Motion is what makes something move, there are different types and different ways to make motion, motion also comes with forces.
To figure out the motion type, we can simply see the wording of the sentence:
1) Air Resistance is the motion of air, it would be pushing up to stop the fall a bit.
2) We can neglect the resistance by being straight so we have to deal with less of it.
3) This motion is not in motion as nothing happened/happening.
4) This is friction as the friction of the ground and turning the car is slowing it down.
5) The motion is going in any direction as it depends on the start of the asteroid and its starting angle.
6) If its not moving; there is no motion.
7) We can neglect it by going on a 0 degree slope.
8) We simply have to do nothing as its already a law and will happen naturally.
9) The motion is basic motion with some friction due to its scenario.
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The half-life of Radon-222 is 3.8 days. Calculate how long a 48g sample of radon will last before it contains only 3g of radon.
PLS HELP FOR MY GCSE REVISION! ill give brainliest
Answer:
48 / 3 = 16
1 / 16 of the original amount is to remain
4 half lives = 1/2 * 1/2 * 1/2 * 1/2 = 1/16
After 4 half lives 1/16 of the original amount is present
4 half-lives * 3.8 days / half-life = 15.2 days
After 15.2 days only 3 g will be present
a body dropped from a height reaches a velocity of 13m/s just before touching the ground. What is the initial height of the ball and the time of height
Hi there!
We can use the following (derived) equation to solve for the final velocity given height:
vf = √2gh
We can rearrange to solve for height:
vf² = 2gh
vf²/2g = h
Plug in the given values (g = 9.81 m/s²)
(13)²/2(9.81) = 8.614 m
We can calculate time using the equation:
vf = vi + at, where:
vi = initial velocity (since dropped from rest, = 0 m/s)
a = acceleration (in this instance, due to gravity)
Plug in values:
13 = at
13/a = t
13/9.81 = 1.325 sec
Answer this question i will mark you brainliest
Answer:
es la c)
Explanation:
Answer:
Es la c porque si ................
Chọn câu trả lời đúng Một ôtô đang chạy thẳng đều với vận tốc 36km/h bỗng tăng ga chuyển động nhanh dần đều .Biết rằng sau khi chạy được quãng đường 1km thì ôtô đạt vận tốc 108km/h .Gia tốc của xe là
A. 1mm/s2 B. 0.001cm/s2 C. 0,4 m/s2 D. 1m/s2
Answer:
yploi bonjour badam koi dori ka
Please please help me
Answer:
amitude doesnt change
Explanation:
Pleaseee helpppp meeeeeee I will give pountsss
Answer:
8.m= 0. 113 kg
W = 1.1074 N
g = 9.8 m/ s²
9.m= 870 kg
W = 8526 N
g = 9.8 m/s²
10.a) weight on earth:
weight = mass × acceleration due to gravity (g)
g on earth = 9.8 m/s²
W = 75 × 9.8
W = 735 N
b) g on Mars
285 = 75 × g
g = 285/ 75
g = 3.8 m/ s²
what is acceleration of gravity
Answer:
Verified answer
Explanation:
Make me as brain liest plz
A person would weigh less on the moon than on the Earth because... A) the moon has more mass, and therefore more gravity B) the moon has less mass, and therefore less gravity the moon has more mass, and therefore less gravity D the moon has less mass, and therefore more gravity
Answer:
The answer is B
Explanation:
hope this helps <3
brainliest plz ? :)
Please help I'll mark brainliest NO LINKS
Answer:
B
Explanation:
Answer:
B
Explanation:
i just did this question last week
write the energy change when charging the battery of a mobile phone
Answer:
Chemical energy
Explanation:
Because most of the modern mobile batteries are lithium ion batteries where the electricity is stored by the chemical changes in the ionic structure of the battery.
Answer:
to make an energy the electricity provide the energy charging when use
How does noise affect a signal?
A) It causes the signal to deteriorate.
B) It amplifies the signal.
C) It allows the signal to travel further.
D) It changes the signal as it moves from one medium to another.
Answer:
A - It causes the signal to deteriorate
Does the partially elastic collision transfer (more, less, or the same) momentum to the catcher than the completely inelastic collision? Explain.
Answer:
momentum is a vector, KE is scalar. Bodies moving in opposite directions have offsetting momentum, but the KE does not offset.
Explanation:
how long does an electric car last before recharging?
Answer:
It will last until 100 miles.
What is qualitative research?
Quality research most commonly refers to the scientific. process encompassing all aspects of study design; in. particular, it pertains to the judgment regarding the match. between the methods and questions, selection of subjects, measurement of outcomes, and protection against.
Answer:
Research is "creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization, and analysis of information to increase understanding of a topic or issue. A research project may be an expansion on past work in the field.
Explanation:
can someone help me, please?
Answer:
what to do
Explanation:
what is this I did not understand
HELPPPPPP
The free body diagram for an object is drawn below. Calculate the net force acting on the object. If this object is 10 kg, how/where will it accelerate
Answer:
sowi d ko po knows hehe need ko lang po ng points
Explanation:
hope u understand
.) What force is causing the ball to speed up down the ramp?
the answer is gravity
gravity pulls things down
which state of matter has the greatest amount of kinetic energy?
Answer:
A pure substance in the gaseous state contains more energy than in the liquid state, which in turn contains more energy than in the solid state. Particles has the highest kinetic energy when they are in the gaseous state.
Explanation:
Sana makatulong.
Question 1 of 10
This graph shows how the potential energy of a reaction system changes
over time. Which statement is true for this system?
B
Potential energy
С
Reaction progress
O A. The potential energy of the reactants is greater than the potential
energy of the products
OB. The height of the curve at point A represents the activation energy
O C. The height of the curve at point B represents the activation energy.
O D. The potential energy of the products is greater than the potential
energy of the reactants.
The potential energy of the reactants is greater than the potential energy of the products.
What is potential energy of reaction?Potential energy of a reaction is the stored energy that helps in breaking the bond of a compound during a chemical reaction.
The bonds present in the reactants in the reaction mixture split in the presence of the activation energy to release energy and form the product.
Thus,, option A. The potential energy of the reactants is greater than the potential energy of the products.
Learn more about potential energy here: https://brainly.com/question/1242059
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Which of the following best describes why longitudinal waves cannot travel in space?
Answer:
A longitudinal wave travels by displacement of material objects.
Air (for instance) particles transmit waves by their oscillation
Space has no material particles to transmit these waves.
4. Which of the following statements about the state of matter is correct? A. Molecules in a solid are disorderly arranged B. Solids are highly compressible C. Liquids have definite form and volume D. Molecules in a gas move faster than those in a liquid.
Answer:
B. Solids are highly compressible