Answers
Answer:
B
Explanation:
Cause I think it is
Related Questions
Does the earth have mass
Answers
Answer:
yes it does
Explanation:
it's not like Balloon it is a solid so it the earth does have a mass
DUE TONIGHT, JUST NEED TO CONFIRM ANSWER
3. An object moves in uniform circular motion with a centripetal force of 4.5 N. Which of the following is true?
(A) The object’s velocity vector is constant in magnitude and direction.
(B) The object’s acceleration vector is constant in magnitude and direction.
(C) Both the object’s velocity and acceleration vectors change both their magnitudes and directions.
(D) Both the object’s velocity and acceleration vectors have constant magnitudes but change directions.
Answers
Answer:
the answer is D I THINK
Explanation:
Which of the following equations correctly models a balanced single replacement reaction?
Answers
Answer:
d
Explanation:
is the answer
What is mass? (Specific simple answer)
Answers
Answer:
Mass is the quantity of substance in an object
what is reflection of light ? Which type of surface is required for a regular reflection
Answers
Answer:
MIRROR
Explanation:
Answer:
reflection of light is the bouncing back of light rats when it falls on a smooth surface or polish surface.
What can Magnetic force, electric force, and electrostatic force can all be described as.
Answers
Answer:
They can be described as non contact forces
What is the potential energy at Z
Answers
Answer:
It would be 2,500
Explanation:
The KE is 7,500 so the PE would be 2,500
pls pls pls pls help!!!!!
A 96 kg man is standing in an elevator. The man experiences a net force when the elevator moves at an acceleration of 4.0 m/s2 upward and downward. Find both net forces
Answers
Answer:
The net upward force the man experiences is approximately 1,324.8 N
The net downward force the man experienced is approximately 556.8 N
Explanation:
The given mass of the man, m = 96 kg
The acceleration of the elevator, a = 4.0 m/s²
According to Newton's third law of motion which states that action ad reaction are equal and opposite, when the elevator moves upwards, we have;
The net force the man experiences, F = Gravitational force, m·g + The force of the elevator pushing upwards, m·a
∴ ↑F = m·g + m·a
Where;
F = The net force the man experiences
m = The mass of the man = 96 kg
g = The acceleration due to gravity ≈ 9.8 m/s²
a = The acceleration of the elevator = 4 m/s²
∴ ↑F = 96 kg × 9.8 m/s² + 96 kg × 4 m/s² ≈ 1,324.8 N
The net upward force the man experiences ≈ 1,324.8 N
When the elevator moves downwards, we have;
The net force the man experiences, F = Gravitational force, m·g + The loss of the gravitational force as the floor moves further downwards, -(m·a)
∴ F = m·g + -(m·a) = m·g - m·a
F = m·g - m·a
∴ ↓F = 96 kg × 9.8 m/s² - 96 k × 4 m/s² ≈ 556.8 N
The net downward force the man experienced ≈ 556.8 N
A mass sitting on a horizontal, frictional surface is attached to one end of a spring; the other end is fixed to a wall. 3.0 J of
work is required to compress the spring by 0.20 m. If the mass is released from rest with the spring compressed, it
compresses a maximum acceleration of 15 m/s?.
a) Determine the spring constant.
b) Determine the mass.
d) What is the velocity when the mass reaches maximum acceleration?
c) Deterinine the net force when the mass passes 0.10m compression
d) Determine the acceleration when the mass passes 0.10m compression.
e) Determine the velocity when the mass passes 0.10m compression
Answers
Answer:
I started answering this before everything was erases, but briefly
W = 1/2 K x^2 so K = 2 W / x^2 = 6 * 25 = 150
Also F = - K X = 150 * 1/5 = 30 N at max extension
m = F / a = 30 /15 = 2 kg
Since max extension occurs at t = 0 you can write
x = A sin ω t
v = ω A cos ω t
a = -ω^2 A sin ω t note that there is no phase angle here
Also at .1 compression
.1 = .2 sin ω t and sin ω t = 1/2 and ω t = 30 deg = pi / 6
Substiture these values above to get velocity and acceleration when
ω t = 30 deg
How do the temperature curves in your graph show the range of temperature?
Answers
Answer:
Step-by-step Explanation:
PLS HELP!! I will make brainliest!!
Which process is an example of a chemical reaction?
a. an iron nail rusting
b. bath water cooling while you take a bath
c. a piece of metal being heated until it expands
d. a glass window breaking when hit with a baseball
Answers
Answer:
Rusting!
Explanation:
Rusting is a chemical reaction because it is the process of oxidation of a metal.
Answer:
rusting
Explanation:
a car is driven off a cliff at 39 m/s. It lands 141 m from the base. How high
above the ground is it when its speed through the air is 45 m/s?
Answers
Answer: A
Explanation: STEP BY STEP
The engine of a 550kg car is producing a net force of 11,000N. What is its acceleration?
Answers
Answer:
Yeda
Explanation:
yshyei5rexwu drift hai used thakare I exam rest watu testing reddy
Answer:
20
Explanation:
(correct me if im wrong)
F = m×a
11000 = 550 × a
11000/550 = a
Acceleration =20
The kinetic energy of a body moving at a speed of 10 m / s is equal to 1000 J. What is the body mass
Answers
Answer:
m = 20 kg
Explanation:
Given that,
The speed of a body, v = 10 m/s
Kinetic energy of the body, K = 1000 J
We need to find the mass of the body. The formula for the kinetic energy of a body is given by :
[tex]K=\dfrac{1}{2}mv^2\\\\m=\dfrac{2K}{v^2}\\\\m=\dfrac{2\times 1000}{(10)^2}\\\\m=20\ kg[/tex]
So, the mass of the body is equal to 20 kg.
What is the velocity of a wave that has a frequency of 200 Hz and a
wavelength of 0.5m?
Answers
Answer:
No idea now
Explanation:
wil get back to you in few minutes
A billiard ball rolls from rest down a smooth ramp that is 8.0 m long. the acceleration of the ball is constant at 2.0?
Answers
Why is using fossil fuels considered unsustainable?
Answers
Answer:
Fossil fuels take millions of years to replenish
Answer:
Fossil Fuel is limited it is like coal there is a limit and it won't last forever. This also contributes that it is not safe for the environment as well as the safety and health of people. This is similar to when there are many factories around an area there is going to be a high percentage of respiratory diseases such as asthma.
When people place a metal saucepan on the heating element of a stove, heat is transferred from the element to the saucepan by: A reflection.
B convection.
C conduction.
D radiation.
Answers
What is the limiting factor of speed for an object falling through the air?
Answers
⭐Air Resistance is the factor, which limits the speed of an object falling through the air...⭐
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What type of force causes the motion of an object to change
Answers
Answer:
Ok, so...... Unbalanced forces cause a change in motion, speed, and/or direction. When two forces act in the same direction on an object, the net force is equal to the sum of the two forces. In the example below, the net force would be 900 Newtons (450 + 450 = 900), and the object would move to the right.
Explanation:
Answer:
Unbalanced forces cause a change in motion, speed, and/or direction. When two forces act in the same direction on an object, the net force is equal to the sum of the two forces.
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a
A
Question 1
Which of the following is the most accurate description of the relationship between velocity and acceleration?
Velocity and acceleration are the same thing.
O
Velocity is a type of acceleration.
Acceleration is a change in velocity.
Acceleration is positive and velocity is negative.
Question 2
An object that is undergoing a change in velocity is said to be-
Answers
Answer:
response
Explanation:
Acceleration is your changing Velocity. An object that is ACCELERATING is experiencing a change in velocity. usually positive. if an object such as a car reduces velocity, it is called deceleration
Which is heavier , a kilogram of lead or a kilogram of a polystyrene beads ?
Answers
Answer:
They weight the same, they're both 1 kilogram
The weight of the given objects is the same since they have equal mass.
Weight of object
The weight of an object is the gravitational pull of earth on the object. Weight is vector quantity because it varies from place to place due to difference in acceleration due to gravity.
The weight of 1 kg leadW = mg
W = 1 x 9.8
W = 9.8 N
The weight of 1 kg polystyreneW = mg
W = 1 x 9.8
W = 9.8 N
Thus, the weight of the given objects is the same since they have equal mass.
Learn more about weight here: https://brainly.com/question/2337612
Helppp!!!!! Please!!
A 0.144 kg baseball approaches a batter with a speed of 20m/s . The batter lines the ball directly back to the pitcher with a speed of 30m/s . Find the impulse exerted on the ball . If the bat and ball were in contact for 0.012 sec , find the average force exerted on the ball by the bat????
Answers
Answer:
Can you help me in mathematics
What is the acceleration of a 78kg ostrich exerting 438N of applied force running against a wind with 42N of air friction force?
Answers
Answer:idek
Explanation: sorry
From an apple tree 2 metres high, a 100g mass apple fell of the tree, what work did it do?
Answers
Answer:
W = 1.96 J
Explanation:
Given that,
The mass of an Apple, m = 100 g = 0.1 kg
It fell from 2 metres high tree.
We need to find the work done by it. The work done is given by :
[tex]W=mgh\\\\W=0.1\times 9.8\times 2\\W=1.96\ J[/tex]
So, the required work done is 1.96 J.
Please help
What differentiates one layer of the atmosphere from one another?
Please help
Answers
Answer: The stratosphere and the troposphere are defined by the variation in temperature with height. Within a troposphere, the temperature drops as altitude increases, and drops fast enough for convection to occur. Whereas within a stratosphere, the temperature rises with increasing altitude. Features of the atmosphere change with altitude: density decreases, air pressure decreases, temperature changes vary. Different temperature gradients create different layers within the atmosphere. The lowest layer is the troposphere where most of the atmospheric gases and all of the planet's weather are located.
Explanation:
Help Please I will Give The Brainliest! (SCIENCE)
Answers
Answer:
2.Hope this will help you.
Hey guys I need help please help me what do y’all think it is I need help And I’m struggling
Answers
When you stretch a spring, there is energy in the spring's
potential energy store. What word completes the sentence?
Answers
Answer:
field strength i think, I'm not that sure.
Please help, it’s the last question and I’m bad at Physics
Answers
Answer:
The end velocity of the sculpture is 7.00 m/s²
Explanation
The equation needed here is v = √(2gh). Let's do it:
v = √(2 × 9.8m/s² × 2.5m)
v = √(49.0 m²/s²)
v = 7.0m/s
Funny enough the numbers given don't have the accuracy demanded. We're given is 2.5m which is only accurate to the tenths, and 30kg which is only accurate to the nearest integer. Also, presumably the acceleration due to Earth gravity that's provided is only 9.8m/s², so that's still only the nearest tenth. So taking those and asking to find the answer to the nearest hundredth is pointless.
But whatever. The given answer is correct to the nearest hundredth. 7.00m/s² To be sure, I plugged it into a form on a physics page that does exactly that, and the answer they gave was 7.0023745972349, so we have it rounded correctly.