Explanation:
Answer:-Unbalanced Force causes acceleration.
But why?
This is because for accelerating a body we need unbalanced forces to move it.
Hope it helps :)
An athlete completes one round of circular track of diameter 200 meter in 40 sec. What will be the distance covered and the displacement at the end of 2 meter 20 seconds ?
Answer:
400m
Explanation:
If An athlete completes one round of circular track of diameter 200 meter in 40 sec, we can write;
200m = 40sec
To determine the distance after 2min 20secs, we can write;
x = 2,min 20sec
x = 80sec
Divide both expression
200/x = 40/80
200/x = 1/2
x = 2×200
x = 400m
Hence the distance covered after 2min 20secs is 400m
6. If a force of 3000 N is needed to accelerate a car to 3 m/s2, what is the mass of
the car?
Answer:
1000 kgExplanation:
The mass of the car can be found by using the formula
[tex]m = \frac{f}{a} \\ [/tex]
f is the force
from the question we have
[tex]m = \frac{3000}{3} = 1000 \\ [/tex]
We have the final answer as
1000 kgHope this helps you
What force causes an elevator to go up?
Answer:
The Force Of Gravity
Explanation:
The elevator's body diagram has three forces, the force of gravity, a downward normal force from you, and an upward force from the tension in the cable holding the elevator. The combined system of you + elevator has two forces, a combined force of gravity and the tension in the cable.
if the same force is made to act on a larger area then the pressure will _____________
8. What is the S.l unit for mass?
A. kg
B. m/s2
D.N
C. m/s
Answer:
the answer is kg
Explanation:
because the s.i unit for mass is kilogram
An object that has momentum can NOT also be _____.
A. In free fall motion
B. At rest
C. Moving along a curved path
D. Slowing down
Answer:
B
Explanation:
if the object has momentum it can be any other answer except at rest. if it's at rest, it does not have momentum
1. Miranda wraps her hands around a mug of hot tea. The heat from the hot tea is being transferred to the mug, and then to Miranda’s hands, mostly by *
convection
reflection
radiation
conduction
identify the type of wave in the picture please asap
Answer:
It is transverse wave
Explanation:
Explanation:
yes, it's a transverse wave
hope it helps you
Which is an example of a chemical change?
A.) boiling water
B.) melting metal
C.) burning wax
D.) dissolving sugar
Answer:
Burning wax
Explanation:
because in burning, wax reacts with oxygen present in the surrounding and forms carbon dioxide and ash
The temperature at which air becomes saturated with water vapor is called the
percent saturation
water content
dew point
relative humidity
thanks in advance
Answer:
C) Dew Point
Explanation:
The dew point is the temperature at which air is saturated with water vapor, which is the gaseous state of water. When air has reached the dew-point temperature at a particular pressure, the water vapor in the air is in equilibrium with liquid water.
dew point
Explanation: mark me as brainlest
is drinking water a fat, carbohydrate, protein, mineral, vitamin, or water
Explanation:
drinking water is water... but it is also good for you to drink water...
A wave has a frequency of 900 Hz and a wavelength of 200 m. At what speed is this wave traveling?
Answer:
The velocity of the wave is, v = 180,000 m/s
Explanation:
Given data,
The frequency of the wave, f = 900 Hz
The wavelength of the wave, λ = 200 m
The formula for the speed of the wave when the frequency and wavelength are known,
v = λ x f
Substituting the given values in the above equation,
v = 200 m x 900 Hz
v = 180000 m/s
Hence, the velocity of the wave is, v = 180,000 m/s
If a problem has more than one system of interest, more than one free-body diagram is required to describe the external forces acting on the different systems.
1.True
2.False
find momentum, when mass = 20kg and velocity = 5 m/ sec ?
Answer:
the momentum is 100 bas p=mv
Alyssa has four different substances: oil, water, sand, and air. She would like to fill four identical balloons with these materials until all of the balloons have the same mass. Which balloon would take up the most space?
Answer:
not sure but dont give up and dont take advantage of this :)
Explanation:
Answer:
A balloon with air
Explanation:
help me please???!!!!
2 / 3
133%
Choose the correct answer for the following sentences and give the
reason for your answer.(10 marks)
(i) The product of power into focal length for a lens is equal to
(ii)
(a) One (b) ten
(c) one hundred
The human eye has a lens of focal length +5 cm. The power of the
eye is
(a) 0.05 D
(b) 5 D
(c) 20 D
A transparent rod in which successive total internal reflection can
occur is called
(a) A light pipe (b) a thin prism (c) total internal
reflection
The wavelength of visible light is between
(a) 400 nm to 700 nm (b) 40 km and 70 km (c) 20 mm to 200
(iv)
mm
(v)
The SI unit for wave intensity is
(a) Js
(b) Wm?
-1
(c) Wmk1
Answer:
Explanation:
A boy of mass 60kg jumps off a truck of mass 140kg travelling at 7.7m/s. If the boy runs towards the truck with a velocity of 2.5m/s, calculate
(a) the momentum of the truck before the boy jump off
(b) The momentum of the boy on jumping off the truck
(C)the loss of kinetic energy the moment the boy jumped off.
Answer:
hanbebdgsgzjbzbsijxbzyuxhzhbz
Explanation:
auhsbsbgsyuahsiixhwgs6
This table lists traits of four types of vertebrates. Each trait first appeared in a common ancestor of the animals that evolved later. These traits are used to build a branching diagram
Based on the information in the table, which animal belongs in the spot labeled “C” on the branching diagram?
Pls help
Frog belong to the spot 'c'
The organisms with the fewest number of shared characteristics are at the bottom. The organisms with the greatest number of shared characteristics are found at the top.What is branching diagram?a branching diagram show the evolutionary relationships among various biological species based upon similarities and differences in their morphological or genetical characteristics.
Hence the frog is correct answer.
To know more about branching diagram here
https://brainly.com/question/15189819
#SPJ2
Help me plz i'll mark brainliest
Answer:
a PDF is what u use to upload an assignment to turn it in to get graded
Stars emit different wavelengths of visible light due to their different
temperatures. How does this phenomenon support the particle model of
light?
A. It is the result of interference.
B. It is the result of diffraction.
C. It is the result of the photoelectric effect.
D. It is the result of blackbody radiation.
Answer:
D
Explanation:
Just did it
The particles model of light supports the the photoelectric effect, where, light in the form of tiny packets called photons when hit on a metal surface it ejects electrons.
What is photelectric effect?Photoelectric effect is discovered by Albert Einstein. When a light ray hit on a solid surface, the photon or light particle emits from the surface which is having the equal energy as that of the incident photon.
According to wave -particle duality of matter, light can exhibit both particle and wave nature. If light behaves as a particle of specific energy, the light particle is called photon.
Stars emit light in different wavelengths of visible light at different temperatures. The wavelength is equal to the speed of light divided by the frequency. The excitation of electron depends on the temperature also. This effect indicating the particle nature of light.
To learn more on photelectric effect, refer here:
https://brainly.com/question/26465043
#SPJ5
Mechanical energy is the
_______ of kinetic energy and potential energy.
Answer:
machine
Explanation:
Which action will decrease the gravitational force between two objects?
O A. Doubling the mass of each object
B. Moving the objects closer together
C. Adding some mass to one of the objects
D. Moving the objects farther apart
Answer:
It’s D
Explanation:
Answer:
D. Moving the objects farther apart.
What’s is the velocity
Answer:
2.5 m/s
Explanation:
you have to subtract 5 meters because you start at 5 meters. so Just take (30m-5m)/10s=2.5m/s
You shove a chair with wheels(and let it go)and it starts moving across the floor. However,the chair soon shows down and comes to a complete stop. To keep the chair moving,you need to keep pushing on it.
This simple experiment implies that ;
A) Newton's first law,or the law of inertia,does not apply to a chair moving horizontally
B) The action-reaction forces act on the chair and cancel each other
C) A net force in the direction opposite to the motion of the chair acts to slow it down
D) The weight of the chair slows it down
Answer:
Personally I think, that the answer is B.
Explanation:
What is the SI unit for energy?
Watt
Calorie
Joule
Newton
Answer: joule
Explanation: named after English physicist James Prescott Joule . Joule discovered the relationship between heat and mechanical work, which led to the development of the laws of thermodynamics.
What is the force on an object of mass 55 kg that is accelerating at 24 m/s2
Answer:
1320 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 55 × 24
We have the final answer as
1320 NHope this helps you
3
The ion of an element has 3 positive charges. Mass Number of
I Neutrons is ly. What is the of electrons in the song.
Answer:
3 electron hai bro of puch mujhe sab aata h
An example of an insulator is
a, rubber.
b. copper
Csilver
d. iron
Please select the best answer from the choices provided
OA
ОВ
Ос
OD
The statement “Heavy objects fall faster than light objects” is an example of a(n) _______.
A. Hypothesis
B. Question
C. Conclusion
D. Theory
Answer:theory
Explanation: