A 25 newton force applied on an object moves it 50 meters. The angle between the force and displacement is 40.0 degrees. What is the value of work being done on the object
The motion of an object is determined by the sum of the acting on it.
the force acting on that object
A boat moving at a constant speed travels 15 meters in 8 seconds. How far does it travel
in 40 seconds?
75 meters
53 meters
335 meters
480 meters
Omar wrote a hypothesis about batteries called dry cells. If more dry cells are connected end to end, a light bulb will work longer because there is more energy available. What are the variables in his hypothesis? The independent variable is the number of dry cells, and the dependent variable is the length of time the bulb works. The independent variable is the length of time the bulb works, and the dependent variable is the number of dry cells. The independent variable is the number of dry cells, and the dependent variable is the amount of energy available. The independent variable is the amount of energy available, and the dependent variable is the number of dry cells.
Answer:
The independent variable is the number of dry cells and the dependent variable is the time the bulb works.
Explanation:
In this exercise, you are asked to analyze the variables derived from Ómar's hypotypeis
"If more dry cells are connected end-to-end, a light bulb will work longer because more energy is available."
In this hypothesis, the independent variable that is controlled by the researcher is the number of batteries to be connected in series.
The dependent variable that is measured by the researcher is how long the bulbs last.
When reviewing the different answers, the correct one is:
The independent variable is the number of dry cells and the dependent variable is the time the bulb works.
Answer:
It is A.
Explanation:
I did the test on Edg.
A toy car with mass of 3.0kg is push along the table .If the net force on the book is 15.0N what is the toy car's accelaration?
Answer:
a = 5
Explanation:
F = M × A
15 = 3 × a
a = 15 / 3
a = 5
This is only if the toy can is pushing the book or smth coz the question looks incomplete...?
Answer:
5 m/s^2
Explanation:
Realize that Newton's Second Law explains that the net force is equal to the mass mulitplied by the acceleration, or in simple terms, F=ma. In the problem, the force is 15 newtons, and the mass is 3 kg. Substiting and dividing, we get 5 m/s^2 (5 meters per second squared).
2. the energy of the pendulum as it swings up
O potential energy
O kinetic energy
Greatest Potential
O Greatest Kinetic
PLEASE HELP!!! I need a good grade!
Answer:
The answer is D. You're Welcome !
A person walks 2.00 m east, then turns and goes 4.00 m west, then turns and goes back 1.00m East
what is the persons displacement?
Answer: what is the person’s distance
Which of the following is a metal?
A.
iron (Fe)
B.
sodium (Na)
C.
calcium (Ca)
D.
all of these
Answer:
D. All of the above
Explanation:
YES
From the given options, Iron, sodium, and calcium are metals. (option d)
A. Iron (Fe): Iron is a metal. It is one of the most abundant elements on Earth and is widely used in construction, manufacturing, and various industries due to its strength and durability. Iron is an excellent conductor of electricity, which makes it essential for electrical applications.
B. Sodium (Na): Sodium is also a metal. It is a highly reactive metal and is commonly found in compounds like sodium chloride (table salt). Sodium is an essential element for living organisms and plays a crucial role in various biological processes.
C. Calcium (Ca): Calcium is a metal. It is an important element for the human body, as it is a major component of bones and teeth. Calcium is also involved in muscle contraction, nerve function, and blood clotting. Moreover, it is used in the production of alloys and as a deoxidizer in metallurgy.
D. All of these: The correct answer is D. All of the options (iron, sodium, and calcium) are metals. They exhibit typical metallic properties such as high electrical and thermal conductivity, metallic luster, and malleability.
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If I am throwing a bowling ball off a roof and a watermelon off a roof at 30
feet, which object do you think will have more energy?
Answer:
Th ball
Explanation:
An arrow leaves a bow at 60 m/s at an angle of 30 degrees to the horizon.
60 m/s
30
Which best gives the total time of flight for the arrow before it returns to its original
height?
P.4C
Answer: 11
Explanation:
A car initially rolling at 12 m/s comes to a stop in 20 seconds. Assuming the car has uniform acceleration, how far does it travel during this time interval?
Which statement accurately describes static electricity?
Th beste description for static electricity is that It is caused by separated positive and negative charges.
What is static electricity?Static electricity referes to electricity that is static or that do not flow.
It is caused by separated positive and negative charges.
Therefore, the best description for static electricity is that It is caused by separated positive and negative charges.
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Answer:
B
Explanation:
I’ve already figured out A. I just need help with B and C.
Answer:
595433.00
1456543.00
Explanation:
You have $20 and your boss gives you $10
each second for 3s. How much money do
you have after 3s?
Answer:
$50
Explanation:
:) =)
Which statement best describes the purpose of the vacuum inside a thermos?
A. It prevents particles from transferring thermal energy between the inner and outer bottles.
B. It increases heat loss through conduction between the outer and inner bottles.
C. It prevents heat loss through radiation, which requires matter to transfer energy.
D. It allows for more collisions between the particles that make up the outer and inner bottles.
Answer:
I think its a.
Explanation:
Electron dot diagrams help you predict how an atom will bond with other atoms.
True or false?
what can you say about the acceleration of objects falling in a vacuum?
Answer:
The mass, size, and shape of the object are not a factor in describing the motion of the object. So all objects, regardless of size or shape or weight, free fall with the same acceleration. In a vacuum, a beach ball falls at the same rate as an airliner.
Explanation:
ALL objects (regardless of their mass) free fall with the same acceleration - 9.8 m/s/s. This particular acceleration value is so important in physics that it has its own peculiar name - the acceleration of gravity
Which newton's law would best go with doing push ups?
Answer:
Newton's Third Law
Explanation:
According to Newton's third law of motion, forces always act in equal but opposite pairs. Another way of saying this is for every action, there is an equal but opposite reaction. This means that when you push on a wall, the wall pushes back on you with a force equal in strength to the force you exerted.
Your Cardiovascular system is made up of what three body parts?
Question 1 options:
Heart
Lungs
Blood vessels
Blood
Muscles
Answer:
heart, lungs, blood vessels
Explanation:
A 6.46 kg object moving with a velocity of 5.23 m/s is struck from behind by a moving 11.77 kg object. They stick together, moving off with a mutual velocity of 17.93 m/s. What was the original velocity of the 11.77 kg object before the collision?
Answer:
its z trust me
Explanation:
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what are the four system of measurement
Answer:
ask google
Explanation:
Use the drop-down menus to complete the statements.
A vertical column of elements in the periodic table is called a .
A horizontal row of elements in the periodic table is called a .
Atoms of elements in the same group have the same .
As you move from left to right on the periodic table, the atomic number .
Explanation:
A vertical column of elements in the periodic table is called a group
A horizontal row of elements in the periodic table is called a period
Atoms of elements in the same group have the same number of valence electrons
As you move from left to right on the periodic table, the atomic number increases
Answer: the first one is group
2. Period
3. Number of valence elections
4. increases
please help 25 points!
How long would it take you to run a 21 km race (a half marathon) if your average speed is 14 km/h?
How much TIME will it take you to finish the race?
a. 1.5 hours
b. 1.5 km/km/h
c. 0.7 hours
d. 0.7 km/hour
e. 294 hours
Answer:
A
Explanation:
t=s/t
t=21km/h:14km/hr
t=21/14* km/km *hr
t=1,5 hr
Answer:
A
Explanation:
To run a 21 km race at a 14 km/h would take 1.5 hours
What happens to a circuit's R, V, and I when you change the length of the wire
in the circuit?
The resistance in a circuit is directly proportional to the length of the wire. Thus as the length increases, R increases and current I decrease. But the voltage v remains constant.
What is Ohm's law ?Ohm's law states that, the voltage across a circuit is the product of the current and resistance.
Thus, V = I R
The resistance R is expressed by the expression:
R = ρ l/a
where ρ is the proportionality constant called resistivity and l and a be the length and area of the wire.
Thus, as the length increases, resistance also increases.
The increase in resistance result in a decrease the current through the circuit. Therefore, voltage remains constant. Hence, option B is correct.
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the unit of mass is fundamental unit
Answer:
Kilogram and symbol kg.
What would be 1/2 times 800?
Answer:
The answer is 400
Explanation:
A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car.
Answer: 8.1m/s^2
Explanation:
For this question, in order to solve it, we have to use the second equation of motion which will be:
s = ut + 1/2at^2
where,
u = initial velocity
v = final velocity
t = time
a = acceleration
Since u = 0, then
a = 2s/t^2
a = 2 × 110/5.21^2
a = 220/27.1441
a = 8.1m/s^2
1 hr 16 minutes equal how many minutes ?
Answer:
76 minutes.
Explanation:
There are 60 minutes in an hour + 16 minutes= 76 minutes.
Calculate the following sum, and express the answer in meters. Follow the rules for significant figures.
(25.873 km) + (1024 m) + (3.0 cm) =
Answer:
26897.3 m
Explanation:
1 km = 1000 m
1 cm = 0.01 m
so the calculation will be
25873 m + 1024 m + 0.03 m= 26897.3 m
The sum of the given expression (25.873 kilometers ) + (1024 meters ) + (3.0 centimeters) would be 26897.0 meters.
What are significant figures?In positional notation, significant figures refer to the digits in a number that is trustworthy and required to denote the amount of something, also known as the significant digits, precision, or resolution.
As given in the problem we have to Calculate the following sum and express the answer in meters, by Following the rules for significant figures,
(25.873 kilometers ) + (1024 meters ) + (3.0 centimeters)
1 kilometers = 1000 meters
1 meter =100 centimeters
(25.873 ×1000×100) + (1024×100 ) + (3.0 centimeters)
= 26897.03 centimeters
Thus ,the sum of the given expression (25.873 kilometers ) + (1024 meters ) + (3.0 centimeters) would be 26897.0 meters.
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