Answers
Answer:
no one else is answering, also its only 5 points -_-
Explanation:
Related Questions
A crate weighing 523 N rests on a plank that makes a 22.0 angle with the ground. Find the components of the crate's weight force parallel and perpendicular to the plank. ( Fgx = –196 N, Fgy = –485 N)
Answers
Answer:
Explanation:
The weight of the crate will e equal to its normal reaction R
Since R = mgsin theta = W
W = mgsintheta ( resolved along the vertical perpendicular to the plank
Fy = 523sin22°
Fy = 195.92N
Since the weight is acting along the negative y direction,
Fy = -195.92N
The force parallel to the plank will be the force acting in the horizontal direction.
Fx = Fcos theta
Fx = 523cos 22°
Fx = 484.9N
A block of mass 4 kg rests on a frictionless horizontal surface, what horizontal force is required to accelerate the block at 5 m/s^2 ?
Answers
Answer:
20N
Explanation:
Given parameters:
Mass of the block = 4kg
Acceleration = 5m/s²
Unknown:
Horizontal force needed to accelerate the block = ?
Solution:
According to Newton's second law of motion;
Force = mass x acceleration
Now insert the parameters and solve;
Horizontal force = 4 x 5 = 20N
A tennis ball, 0.314kg, is accelerated at a rate of 164m/s2 when hit by a professional tennis player. What force does the player’s tennis racket exert on the ball?
Answers
Newton's 2nd law of motion:
Force = (mass) x (acceleration)
= (0.314 kg) x (164 m/s²)
= 51.5 newtons
(about 11.6 pounds).
Notice that the ball is only accelerating while it's in contact with the racket. The instant the ball loses contact with the racket, it stops accelerating, and sails off in a straight line at whatever speed it had when it left the strings.
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What is the speed of a car that travels 400 m in 20
minutes?
Answers
Answer:
3.33 m/s
Explanation:
time = 20 minutes = 20 x 60 = 120 seconds
distance = 400m
speed = distance/time
= 400/120
= 40/12
= 10/3
= 3.33m/s
A joule equals the amount of work done on an object when a force _______ displaces that object ______.
Answers
Answer:
A joule equals the amount of work done on an object when a force of 1 Newton displaces that object 1 metre
3. As the ice melts into liquid water, what happens to the kinetic energy of the particles in the sample?
4. How does the kinetic energy of the particles in the sample relate to the sample’s temperature?
Answers
Answer:
As ice melts into water, kinetic energy is being added to the particles. This causes them to be 'excited' and they break the bonds that hold them together as a solid, resulting in a change of state: solid -> liquid.
Explanation:
As the ice melts into liquid water, the kinetic energy of the particles in the sample increase. The temperature of the sample is directly proportional to the kinetic energy of the particle.
What is Kinetic energy?The kinetic energy of an object is the energy which it possesses due to the motion of the object. Kinetic energy is defined as the work which is needed to accelerate a body of a given mass from the rest position to its stated velocity. The body of an object maintains the same amount of kinetic energy which it gained during its acceleration unless its speed changes.
The temperature is directly proportional to the kinetic energy of the object. As the temperature of the object increases the phase of the object changes from solid to liquid.
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For questions 1 - 4 complete the representations for the four patterns below. Provide the mathematical
model. Complete the data table using the A value provided. Insert a graph using the data table you filled
out (you may use desmos ). (40pts)
Pattern with 1. Horizontal Line
2. Linear
3. Quadratic
4. Inverse
constant (A-value) A = 100
(Proportional)
A = 100
A= 100, B = 0
A = 100
Mathematical
Model
y =
y=
y =
y =
Y у
y у
Y у
у
Data Table Form
х
1
2
5
10
х
1
2
5
10
х
1
2
5
10
х
1
2
5
10
Graph Form
Answers
Answer:
Explanation:
1
2
3
The third table shown in the diagram below can be modelled with the equation, y = x + 2, therefore, it represents a linear equation.
What is a Linear Function?A linear function is a function whose graph represents a straight line when the points are plotted, and also can be modelled by the equation, y = mx + b.
b is the value of y when x = 0 (y-intercept)
m is the slope or unit rate.
Thus, the third table shown in the diagram below can be modelled with the equation, y = x + 2, therefore, it represents a linear equation (see attachment). The last table has a constant slope of -3, hence it represents a linear function.
Table of functions
From the given table, we need to determine which of the table is a linear table. To determine that, we must check which of the table has a constant rate of change
Looking at the last table;
Slope = -4-(-2)/2-1
Slope = -4+1/1
Slope = -3
Since the last table has a constant slope of -3, hence it represents a linear function.
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1 kg sample of aluminium is stored in a laboratory. In a different laboratory, in the same town,
there is a 1 kg sample of iron.
Which quantity must these two samples always have in common?
Same density
Same temperature
Same volume
Same weight
Plz explain
Answers
Answer:
same weight
Explanation:
because same
how many atoms are in 4ZnF₂ ?
Answers
Answer's
Explanation's
1) if you could eliminate one item from your diet to improve your heath, what would it be?
2) if you could add one item to your diet to improve your heath, what would it be?
Answers
Answer:
Rice
Explanation:
Because I can't control eating lots of rice
Answer:
1. I would eliminate chocolate. I normally eat healthy but when chocolate's around, I can't resist it though, it has a naturally bad affect on my health. Chocolate makes me nauseas but I still eat it because the taste is unbearable.
2. I would add fish. I hear that it's a good protein, and I don't eat chicken or meat or fish at all because of the texture, vegan or vegetarian? Eh, no. But, I would add fish because many people say it has great health benefits.
I WILL GIVE BRAINLIEST!!!!
The image above shows two opposite forces acting on a rope, what can we say is true about the affect of the forces on the rope?
Answers
6. Which Thanksgiving dish contains the most dietary fiber ? (Corn) (Mashed Potatoes) (Sweet Potatoes) (Pecan Pie)
Answers
Answer:
The correct option is;
Sweet Potatoes
Explanation:
The dietary fiber in Corn = 2.7 g per 100 g
The dietary fiber in Mashed Potatoes = 1.3 g per 100 g
The dietary fiber in Sweet Potatoes = 3 g per 100 g
The dietary fiber in Pecan Pie = 2.1 g per 100 g
Therefore, the Thanksgiving dish that contains the most dietary fiber per 100 g is Sweet Potatoes
An object's describes it's distance and direction from a reference point .
1 : acceleration
2 : displacement
3: motion
4: position
5: speed
6 : velocity
Answers
6: velocity i hpe this is what your looking for
An object's describes it's distance and direction from a reference point 2 : displacement
What is a vector quantity ?
A vector quantity is defined as the physical quantity that has both directions as well as magnitude.
if object is describing direction also , then it should be a vector quantity as it can not be scaler . Position , speed , motion all are scaler quantities
Along with direction it is also showing its distance , that means it must be displacement because When a body moves from one position to another, the shortest(straight line) distance between the initial position and final position of the body is known as its displacement and it is vector quantity .
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Is acceleration occurring in this statement?
A car moves at a constant speed and makes a left turn.
Answers
Answer:
no because the car is in the rest so this not a acceleration
What is the relationship between force and distance?
Answers
Answer:
Force is the action exerted on a body of mass to move from one palce to another or to change position
While distance is a measure of how far and object has travelled from its starting point, or how far away it is OR Distance is a measure of seperation between two points
Explanation:
The relationship between them both is MOTION .......thats what I think
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A train travels for 120 seconds (s) at a speed of 50 meter per second (m/s). What was the distance (m) that it travelled?
Answers
Answer:
2
Explanation:
50 times 2
If the magnification of the image is NEGATIVE, the image is ( choose two .25
* answers)
virtual
real
inverted
reduced
Answers
Answer:
C. Inverted
Explanation:
When a negative magnification is obtained, it means that the image is inverted. When an object is placed far away from a converging lens than the focal length, the image is formed on the opposite side of the lens. In this case, a screen is introduced at image position for viewing. The image is focused up-side down. It is real and inverted.
What’s the kinetic energy of the object? Use .
Erica is competing in the shot put event at a track meet. She hurls a shot with a mass of 4 kilograms at a speed of 9 meters/second. The shot’s kinetic energy is
joules.
Answers
Answer:
18joules
Explanation:
1/2 of 4=2
2 multiply by 9= 18 joules
How can you tell when the forces acting on a system are balanced?
a. no lift
b. no accelleration
c. no displacement
d. no gravity
Answers
Answer:
a. no lift
Explanation:
To determine if the forces acting upon an object are balanced or unbalanced, an analysis must first be conducted to determine what forces are acting upon the object and in what direction. If two individual forces are of equal magnitude and opposite direction, then the forces are said to be balanced.
plz give me a brianliest
PLEASE HELP. I'LL GIVE BRAINLIEST TO CORRECT ANSWER.
There are several ways to model a compound. One type of model is shown.
4 C's are connected in a line by 3 black lines. The C on the left has 3 H's attached to it each by a black line. The next C has 1 H attached by a black line and 1 O attached by 2 black lines. The next C has 2 H's attached to it by 1 black line each. The last C has 2 H's attached to it by 1 black line each and 1 O attached by a single black line. That O has an H attached to it by 1 black line.
What is the chemical formula for the molecule represented by the model?
CHO
C4H9O2
C4H8O
C3H8O2
Answers
Answer:
C
Explanation:
Edge2020
give any five difference between of solar system and constellation
Answers
Answer:
constellation is just a name for a set of stars that are perceived, from an earth viewpoint, to make a form in tge night sky…. the Plough, the Great Bear, for example. A galaxy is a formation of stars that are revolving around a centre, our own solar system lies in the outer edge of the galaxy known as the Milky Way.
Explanation:
Plzzz help me I will mark you brainiest
Answers
Answer:
The force is Centripetal force
What is the developmental period during which a person will experience the most amount of physical change?
A. middle childhood
B. adolescence
C. early adulthood
D. late adulthood
Please select the best answer from the choices provided.
B
ОООО
C
Answers
Answer:
adolescence:)
Explanation:
Adolescence is the developmental period during which a person will experience the most amount of physical change. So, the correct option is B.
What is meant by periods of development ?The periods of development of a person is defined as the period of time or the stages of life during which the person grows up from an infant to an adult.
Here,
The developmental period of humans includes the different stages of their life such as infancy, early childhood, middle childhood, adolescence, early adulthood, middle adulthood and old age.
Adolescence is an important developmental period of a person that results in the more amount of physical changes in their body.
The physical changes that are occurring inside and out of the body during the period of adolescence is known as puberty. This happens due to the release and variations of some hormones in our body.
The physical changes that happens to our body during adolescence includes the change in body structure and shape, formation of facial hair and pubic hair, change in voice, etc.
During puberty stage, a hormone called testosterone or male hormone is released in boys.
A hormone called estrogen is released during puberty in girls.
These hormonal actions causes the various physical changes in the body.
Hence,
Adolescence is the developmental period during which a person will experience the most amount of physical change.
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The rotation of earth takes approximately _______ to complete, and the revolution of earth takes approximately _______ to complete.
A.
1 day, 30 days
B.
12 hours, 24 hours
C.
365 days, 24 hours
D.
24 hours, 365 days
Answers
Answer:
D. 24 hours, 365 days
Explanation:
please mark me brainlist
and this is correct answer
What does the xylem do?
A .stores the glucose
B captures the sunlight
C absorbs oxygen into the leaf
D carries water from the roots to the leaves
Answers
Answer:
D carries water from the roots to the leaves.
is the answer.
Explanation:
Xylem is the specialised tissue of vascular plants that transports water and nutrients from the plant–soil interface to stems and leaves, and provides mechanical support and storage.
Answer:
D carries water from the roots to the leaves
Explanation:
have a nice day
A bus makes a 10-kilometer journey through town. It's top speed is 50 km/h and it's mean speed is 16kn/h. Explain why these speeds are different.
Somebody pls help me with this question!
Answers
Answer:
speed are different at different places
Explanation:
because it's top speed is 50km/h,so it's initial speed may be less. when it covers some distance it's speed changes again. then we have given a mean speed .mean speed means sum of all speed divided by sum of total time.so the mean speed and final speed differs from each other
What happens to the amount of energy in a wave when the amplitude is increased?
Stays the same
Gets lower
Gets higher
Answers
Answer:
It gets higher :)
Explanation:
Answer:
higher
Explanation:
why the hell not 86 points
Answers
Answer:
what I dont understand
what is an object that can hold things together or lift an object?
Answers
Answer:
Inclined plane = 2. Something that can hold things together or lift an object. Wedge = 3.
Explanation:
Screw is simple machine which is used to hold to objects together
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Formulate a weekly schedule that shows evidence of three different activities beneficial for your muscular system.
(please hurry but also don't work too hard that it's a huuuuuuuge paragraph)
Answers
Answer:
Monday - Jog.
Tuesday - Eat at a Salad Bar.
Wednesday - Bike ride.
Thursday - gym.
Friday - Kale Smoothie.
Explanation: