Answer:
4m/sExplanation
Give the initial velocity of am object as v =(4m/s)xi+(3m/s)yj
From the expression;
Vy = 3m/s
Vx = 4m/s
At the maximum height, the velocity of the body is zero i.e Vy = 0m/s
The velocity of the projectile as it reaches its highest point will be:
v = (4m/s)xi + 0
v = √4²+0²
v = √16
v = 4m/s
Hence he velocity of the projectile when it reaches its highest point is 4m/s
Which of the following is not a force? *
gravity
friction
tension
acceleration
Answer:
tension
Explanation:
its a feeling
An egg is dropped from the top of the band hall. If the band hall is 25 m
tall, determine the time it takes the egg to hit the ground.
Answer:
2.26s
Explanation:
The time it takes for the egg to hit the ground can be calculated using the formula:
S = ut + 1/2at²
Where; S = distance of handball from ground (m)
t = time (s)
a = acceleration due to gravity (9.8m/s²)
u = initial velocity = 0m/s
Inserting our values into the formula, we have:
25 = (0 × t) + 1/2 (9.8 × t²)
25 = 0 + 9.8t²/2
25 = 9.8t²/2
25 × 2 = 9.8t²
50 = 9.8t²
t² = 50/9.8
t² = 5.102
t = √5.102
t = 2.258
t = 2.26s
Mass
An object accelerated at a rate of 50 m/s/s. A force of
100 N was used to make this happen. What is the mass
of the object?
kg
HELP ME PLS
Answer:
2kg
Explanation:
100N = Force 50m/s²= Acceleration
Mass=?
the equation is;
Mass(kg)= Force(N) ÷ Acceleration (m/s²)
100÷50=2
A ball is projected horizontally from the top of a cliff and free falls to the ground.
Which one of the following statements accurately describes the ball's motion?
NEED HELP ASAP!!!
If 100 newtons of force are applied over a distance of 50 meters for 5 seconds, how much power is used
2,500 watts
1,000 joules
10 watts
1,000 watts
Answer:
2,500 watts
Explanation:
I got this answer right on a test. I hope it works for you to.
Answer:
2500 wats
Explanation:
from the list below, which athlete would need to focus on cardiovascular endurance?
A. Body Builder
B. Baseball Player
C. Marathon Runner
D. Bowler
Answer:
A. body builder
Explanation:
An object accelerates from rest to a velocity of 34 m/s
over a distance of 70 m. What was its acceleration?
Answer:
6.8m/s²
Explanation:
Given parameters:
Initial velocity = 0m/s
Final velocity = 34m/s
Distance = 70m
Unknown:
To solve this problem we apply one of the motion equations;
V² = U² + 2aS
where V is the final velocity
U is the initial velocity
a is the acceleration
S is the distance covered
Input the parameters and solve;
34² = 0² + 2 x a x 70
34² = 140a
a = 6.8m/s²
what happens to the wave length and frequency of a wave as it crosses a different medium and speeds
Answer: SEE EXPLANATION!
Explanation:
When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases. Part of the wave travels faster for longer causing the wave to turn. The wave is slower but the wavelength is shorter meaning frequency remains the same.
I hope this helps you!
Which has more inertia?
A human or an elephant and explain why?
Answer:
A human
Explanation:
An elephant weighs more, therefore it's gravitational pull by Earth impacts it more than a human.
Hope this helps!
Have a nice day!
If you find my answer helpful
Pls consider marking my answer as Brainliest! It would mean a lot!
Answer:
Explanation:
Think of it this way: An elephant has more inertia than a human. It is much harder to push an elephant across a floor than it is a human, and much harder to stop the elephant once it is moving. Therefore, by definition, an elephant has more mass than a human.
does changing position of charges change the magnitude
Answer:
No, they will not change.
Explanation:
What is the kinetic energy of a baseball traveling at a 25 mi./s with a mass of 0.56KG
Answer:
453.25 MJ
Explanation:
The formula to find kinetic energy is :
[tex]E_{k} = \frac{1}{2} X m X v^{2}[/tex]
E.k = ?
m = 0.56kg
v = 25mi./s which needs to be converted into metres per second
1mi./s= 1609.34m/s
25 mi./s = 40233.6 m/s.
E.k. = 0.5 × 0.56 × 40233.6²
e.k = 453247919.3J
E.k.= 453.25 MJ
The temperature of a 5.0 kg block increases by 3 degrees C when 2,000 J of thermal energy are added to the block. What is the specific heat of the block? _____________
What is a scientific theory?
Answer:
Scientific theories are explanations of some aspect of the natural world based on repeated observations.
Hope this helps!!!!
Answer:
The way that scientists use the word 'theory' is a little different than how it is commonly used in the lay public," said Jaime Tanner, a professor of biology at Marlboro College. "Most people use the word 'theory' to mean an idea or hunch that someone has, but in science the word 'theory' refers to the way that we interpret facts.
Explanation:
How fast would an inline skater have been traveling if he had covered 400 m in 10
seconds?
Answer:
The answer is 40 m/sExplanation:
The speed or velocity of an object given it's distance and time taken can be found by using the formula
[tex]v = \frac{d}{t} \\ [/tex]
From the question we have
[tex]v = \frac{400}{10} \\ [/tex]
We have the final answer as
40 m/sHope this helps you
a motorcycle stunt driver rides his motorcycle off a small ledge that is 8.4m high his initial velocity as he rides off the ledge is 25m/s in the horizontal direction how long does it take before he lands on the ground. answer= 1.3 s
Answer:
1.3s
Explanation:
The weight of a box is having a mass of 100 kg is ___n
Answer: the weight of the box is 980N
Explanation:
The weight an object has is defined as the force of gravity acting on that object which is given as
w =m x g
Since weight is defined as a force, it can also be written as
w=mg
= F= mg
where m= mass of the object in kg given as 100Kg
an g is the gravitational acceleration in m/s^2 = g is 9.8 m/s2
F= mg
F = 100 kg x 9.8 m/s2
F== 980Kgm/s^2 = 980N
Therefore the weight of the box is 980N
Is silicone a better conductor then silver
Answer: Silicon is better
Hope it helps!!
Which two options would increase the electric force between two charged
particles?
O A. Increase the distance between the particles.
B. Increase the charge of one of the particles.
C. Decrease the charge of both particles.
O
D. Decrease the charge of one of the particles,
O E. Decrease the distance between the particles,
The two options would increase the electric force between two charged
particles is
E. decrease the distance between particles.
B. Increase the charge of one of the particles.
What is Electric force?The attractive or repulsive interaction that lies between any two charged objects should be called as the electric force.
When the distance between the particles is decreased and the charge of one particles should be increased so it increased the electric force.
hence, option b and option e are correct.
Learn more about electric force here: https://brainly.com/question/17562167
How many joules of kinetic energy does the pendulum have when it has 50 J of potential energy?
Answer:
We do not have the information of the pendulum, so i will answer in a general way.
First, as you know, the total energy can be written as:
E = U + K
Where:
U = potential energy
K = kinetic energy.
Now, by the conservation of energy, we know that E does not change.
This means that if U increases an amount x, then K must decrease by the same amount.
Now, at the maximum height of the pendulum, the velocity is zero, this means that in this point the kinetic energy is 0j.
E = 0 + U
E = U.
Another thing that you may know about pendulums is that, if the initial displacement is by an angle θ, then the angle between the string and the vertical can never be more than θ.
And we know that:
U = m*g*h
in this case, we can write h, the maximum height, as:
h = L*(1 - cos(θ))
Where:
L is the length of the string, g is the gravitational acceleration and m is the mass of the pendulum.
Then the total energy of the pendulum is:
E = m*g*L*(1 - cos(θ))
And we had that:
E = K + U = m*g*L*(1 - cos(θ))
Then, if in a given point we have U = 50j, the kinetic energy must be:
K + 50j = m*g*L*(1 - cos(θ))
K = m*g*L*(1 - cos(θ)) - 50j
"As long as the baseball I hit is
moving upward, there is no air resistance. Air resistance only slows it down when it is falling downward."
Answer:
Air resistance is always in play so it always has air resitance no matter what.
. Exercises that specifically prepare the muscles for active movements
Answer:
Dynamic Stretching
Explanation:
Dynamic Stretching: Dynamic stretches are controlled movements that prepare your muscles, ligaments and other soft tissues for performance and safety.
Please help!!
Why is it important to keep the mass (weight) of your car low?
Words to use:
Mass, inversely proportional (as mass goes up, acceleration goes down),
acceleration (to change motion), force
Answer:
Mass is the correct answer.
Explanation:
Many drivers report a more positive handling response and a definite improvement when reducing unsprung mass. You want to keep unsprung weight to as little as possible. This minimizes the momentum and energies that your suspension has to counter. In effect, it can make your shocks more sensitive.
Answer:
If you push hard, the block's bottom will move out from under its center of gravity and the block will tip over. The taller the block, the easier it is to push the bottom out from under the center of gravity. Keeping a car's center of gravity low is important to avoiding disaster during turns. But if you don't keep the car's center gravity low it will be inversely proportional and the acceleration can be damaged with force, and its mass could get disproportionate.
Explanation:
I'm sorry i tried my best. :/
What is special about decomposers? *
a. they are autotrophs that absorb nutrients that have been digested outside their bodies.
b. they are heterotrophs that absorb nutrients that have been digested outside their bodies.
c. they are autotrophs that digest food internally (inside their bodies)
d. they are heterotrophs that digest food internally (inside their bodies)
The formula for calculating density, D, is D=MV, where M represents mass and V represents volume.
For liquids, volume is often given in cubic centimeters (cc), which is the same as cm 3. If the density of an unknown liquid is 1.6 g/cc, what is the mass of 800 cc of the unknown liquid in grams (g)?
Answer:
Density 1.6g/cc means that every 1(one) cubic centimeter of the liquid has a mass of 1.6 grams.
Then, what about 800 cubic centimeters – how much mass, in grams, will it have ?
= 1.6 * 800 = 1280 g
Explanation:
A car pulling out of a gas station accelerates from rest at a constant rate it covers 1200 meters in 30 seconds. What is the rate of acceleration
An object dropped from rest and falls a distance of 80 m.
What is the objects displacement
Answer:
Δx = -80m
Explanation:
The object's displacement is -80m because it landed 80m below where it started.
Which of the following statements is not true about genes?
A. Genes consist of hormones that regulate bodily functions.
B. Genes are DNA segments that are carried in each chromosome.
C. Genes serve as the biochemical units of heredity.
D. Genes operate in pairs and influence one's physical traits.
Answer:
A.) Genes consist of hormones that regulate bodily functions.
Explanation:
The statements (A), (B) and (C) are correct to explain the functions of Genes in a human body.
The given problem is based on the concept and fundamentals of Genes. Genes in a human body acts as a set of instruction that determine the likings of the organism, its appearance, and its behavior in its environment.
As per the above definition, Genes are the hormones that is responsible for the regulation of functions of body.Genes are made of a substance called deoxyribonucleic acid, or DNA. Moreover, it is a short section of DNA that contains instructions that tell the cells to make molecules called proteins.It is responsible for the transmission of hereditary from one biological unit to another, therefore it is known to serve as Biochemical unit for Heredity.Thus, we can conclude that the statements (A), (B) and (C) are correct to explain the functions of Genes in a human body.
Learn more about the Genes here:
https://brainly.com/question/8832859
All living things are made of one or more cells.
True
False
Answer:
the correct answer is false
Please fast ?????????
Answer:
Explanation:
Kinetic
Can someone please help me on this?
Answer:
80
Explanation:
