Please answer as if you're teaching someone who has no knowledge of the subject, thank you.
Answer:
(C) 700 N
Explanation:
The given parameters are;
The mass of the mountain climber, m = 100 kg
The angle formed by the rope with the horizontal, θ = 45°
The gravitational field strength, g = 10 N/kg
The weight of the man, W = m × g
∴ W = 100 kg × 10 N/kg = 1,000 N
At equilibrium, we have;
The downward force, the weight of the man, W = The upward force, the vertical component of the tension on the two halves of the rope
We have;
W = T × sin(θ) + T × sin(θ)
∴ 1,000 N = 2 × T × sin(45°)
Therefore, we have;
T = 1,000 N/(2 × sin(45°)) = 707.106781 Newtons
Therefore, the tension in the rope is closest to (approximately) 700 N.
[tex]what \: is \: plane \: mirror \: \: \: {?} [/tex]
>>> A plane mirror has a reflective surface that is flat (planar). The angle of reflection equals the angle of incidence for light rays striking a planar mirror. A virtual picture is a representation of an object created at the spot where light rays appear to originate.
Hope it helps
Answer:
any smooth surface which can return back the rays of light in to the same medium is called a plane mirror.
hope it helps
what type of object is called object at rest ? Write with example.
Answer:
ln physics, Rest is the state at which an object is stationary or not moving with respect to its surroundings, and is said to be at rest. An example would be a book lying on a table.
Answer:
When an object does not change it's position with respect to time it is said to be at rest.
Explanation:
Example- A person sitting on a chair or a book lying on a table.
Please note there is no such thing as absolute rest.
Take the example of a person A sitting in a moving bus. If the observer is in the bus then to him person A is at rest. However if the observer is is outside the bus then person A is in motion as the bus is moving.
Please mark me as brainliest.
If we keep on applying force on a material object, can it gain speed of light?
Answer:
As an object moves faster, its mass increases. ... Because masses approach infinity with increasing speed, it is impossible to accelerate a material object to (or past) the speed of light. To do so would require an infinite force.
Which would increase the speed of a sound wave?
- A wave passes from a solid to a liquid while remaining the same temperature.
- The medium increases in temperature while remaining in the same phase.
- The medium decreases in temperature while remaining in the same phase.
- A wave passes from a liquid to a gas while remaining the same temperature.
Answer:
B. The medium increases in temperature while remaining in the same phase
Explanation:
Good luck on all your tests and Exams!
The sound wave will increase when the medium increases in temperature while remaining in the same phase.
What is a sound waves?Sound waves are composed of compressions and rare factions. Sound is a mechanical wave hence it moves by the vibration of air particles.
As such, the sound wave will increase when the medium increases in temperature while remaining in the same phase.
Learn more about sound waves:https://brainly.com/question/11797560
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given the balance chemical equation
Answer:
in probability theory, a balance equation is an equation that describes the probability flux associated with a Markov chain in and out of states or set of states.
Explanation:
A car is moving with a uniform speed of 12.0 m/s along a straight path . What is the distance covered by the car in 20 seconds ?
Answer:
Explanation:
This one-dimensional equation is just a fancy way of saying d = rt. Filling in:
d = 12.0(20) so
d = 240 m
A 47 kg mass is moving across a horizontal surface at 8 m/s. What is the force required to bring the mass to a stop in 4.1 seconds? (Hint: This is a multi-step calculation and your answer should come out to be negative). Write your answer to one decimal place.
Answer:
Force = -91.7 Newton
Explanation:
Given the following data;
Mass = 47 kg
Time = 4.1 seconds
Initial velocity = 8 m/s
Since the object comes to a stop, its final velocity would be equal to zero.
To find the force required to bring it to stop;
First of all, we would determine the acceleration of the object;
Mathematically, acceleration is given by the equation;
[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]
Substituting into the equation;
[tex]a = \frac{0 - 8}{4.1}[/tex]
[tex]a = \frac{-8}{4.1}[/tex]
Acceleration, a = -1.95 m/s²
Next, we would determine the force required to bring the object to stop;
[tex] Force = mass * acceleration [/tex]
[tex] Force = 47 * -1.95 [/tex]
Force = -91.65 ≈ 91.7 Newton
At what point does the roller coaster have the most potential energy?
Answer:
Gravitational POTENTIAL ENERGY is greatest at the highest point of a roller coaster.
Explanation:
hope this helps
have a great day/night :)
Which type of electromagnetic waves have the highest energy?
ultraviolet waves
visible light waves
gamma rays
infrared waves
Answer:
Gamma rays
Explanation:
gamma rays have the highest energy and the shortest wavelength
55 points question
please put the answer in order by up to down
please help me
Answer:
animal and plant
Explanation:
1st is animal
mitochondria
cell membrane
nucleus
endoplasmic reticulum
golgi body
plant cell
cell wall
cell membrane
chloroplast
nucleus
vacuole
endoplasmic reticulum
mitochondria
golgi body
The angle at which the refracted light ray lies
along the boundary of the two mediums, this
is the definition of
Answer:
Critical angle
Explanation:
The angle of incidence when the refracted angle is 90°; we have the critical angle at this point. At this point, the refracted ray lies between the boundary between the two medium, this is the angle just before total internal reflection occurs, as the refracted angle exceeds 90°, all rays are reflected. Hence, we can conclude that it is the largest angle at which reflection can still occur.
[tex]what \: is \: water \: cycle \: \: {?} [/tex]
Answer:
water cycle show the continuous movement of water with in the earth and atmosphere
Explanation:
Hope this helps :)
The water cycle is the process through which water evaporates from the earth's surface, rises into the atmosphere, cools and condenses into rain or snow in clouds, and then falls back to the surface as precipitation. Water that falls on land gathers in rivers and lakes, soil, and porous rock strata, and much of it goes back into the seas to evaporate. Water flows in and out of the system.
✄-----------------------------------hope it helps...have a great day!!Which type of training will improve muscular strength?
A.lifting light weights many times
B.lifting heavy weights every day
C.lifting heavy weights with few repetitions
Answer:
C
Explanation:
Lifting heavy weights every day
State three differences between solid friction and viscosity
What can cause electricity to jump across a gap
Answer:
It often happens in a circuit which was conducting,and a switch is opened. Any inductance in the circuit will help the voltage increase due to back emf,and this can cause breakdown of the air insulation and an arc can form.
Explanation:
In all of the following examples, the quantity of the resource
being used by humans is affected EXCEPT–
A petroleum taken from the ground and burned for fuel.
B fresh water used for agriculture, recreation, and
tourism.
C wind power used to provide energy for homes and
businesses.
D metal ores mined and used to create building
materials.
Answer:
C wind power to provide energy for homes and businesses.
what is the definition for speed?
Explanation:
the rate at which someone or something moves or operates or is able to move or operate.
If a bus travels 120 miles and travels at 35 miles per hour, how long will the trip take?
Please help ASAP
Speed = Distance/Time
we have speed and distance from the question;Now,
35 = 120/t
35/120 = 1/t
120/35 = t
3.42 hours = t
Write your answers to these questions. • Does the cardboard fall off? • Does the water pour out? • Something is pushing against the cardboard to hold the water in. What do you think it is?
Answer:
Have you ever tried turning a glass of water upside down without spilling it? It seems impossible! Both kids and adults will be amazed by this experiment that appears to defy gravity.
With just a few simple household items, you can try this simple and fun science experiment where kids can get see the effects of air pressure in action. Printable instructions, a demonstration video, and an easy to understand explanation of how it works are included below.
Helpful Tip: Be sure to try this experiment over a sink or large container lest you accidentally make a BIG wet mess!
. What is the mass of an object if it is pulled by a 5 Newton force and it accelerates at a rate of 20 m/s/s?
Please help ASAP
F = ma
so, we can write it as;
= 5 = m × 20
= 5/20 = m
= 1/4 = m
= 0.25 kg = m
A 150 g baseball is thrown with a speed of 20 m/s. After the ball hits the bat, the ball moves 40 m/s.
What is the momentum before it hits the bat?
What is the momentum after it hits the bat?
Answer:
3000 kg*m/s
6000 kg*m/s
Explanation:
p = m*v
p = 150kg*20m/s
p = 3000 kg*m/s
p = 150kg*40m/s
p = 6000 kg*m/s
Compared to the image which drawing is the closest
Answer:
The one on the left
Explanation:
Answer:
The one on the left
Explanation:
In which direction does the frictional force act on the cube? A) upwards B) downwards C)in all the directions D) side to side
Answer:
D) side to side
Explanation:
The frictional force act on the cube in the side to side direction. The friction force acts opposite to the direction of the motion of an object which reduces its speed or sometimes prevent it from moving from one place to another. In order to reduce the force of friction, the body has to move by rolling instead of sliding and use of lubrication on the surface on which the object moves.
If there are 6 coulombs of charge moving through a wire in 2 seconds. How many amps are moving through this wire?
Answer:
Current = 3 Amperes
Explanation:
Given the following data;
Quantity of charge = 6 C
Time = 2 seconds
To find how many amps are moving through this wire;
Mathematically, the quantity of charge passing through a conductor is given by the formula;
Quantity of charge = current * time
Substituting into the formula, we have;
6 = current * 2
Current = 6/2
Current = 3 Amperes
38. Joey set a school record for running the 200 m race. He completed the distance in
20.6s. What was his average speed?
Answer:
9.7 miles per second
Explanation:
divide 200 by 20.6
Answer in the proper number of significant figures
789.5/8.32
Answer:
94.89182692 is the answer but there is only 3 in 8.32 so it rounds to 94.9
so 94.9 is the answer
hope this helps
have a good day :)
Explanation:
Discuss advantages and disadvantages of tissue culture.
Answer:
Explanation:
ADVANTAGES OF TISSUE CULTURE
There are several advantages to using the tissue culture process. We already mentioned its effectiveness in helping developing countries to increase food production, but what are some other advantages that may be relevant to you?
The new plantlets can be grown in a short amount of time.
Only a small amount of initial plant tissue is required.
The new plantlets and plants are more likely to be free of viruses and diseases.
The process is not dependant on the seasons and can be done throughout the year.
You need only a relatively small space to perform the process (ten times the plants in one-tenth of the space).
On a larger scale, the tissue culture process helps to supply the consumer market with new subspecies and variety.
People looking to cultivate challenging plants such as specific breeds of orchid find more success with the tissue culture process than traditional soil.
DISADVANTAGES OF TISSUE CULTURE
Tissue Culture can require more labor and cost more money.
There is a chance that the propagated plants will be less resilient to diseases due to the type of environment they are grown in.
It is imperative that, before being cultured, the material is screened; failure to pick up any abnormalities could lead to the new plants being infected.
While the success rate is high if the correct procedures are followed, success with the tissue culture is not a guarantee. There is still a chance that the process triggers a secondary metabolic chemical reaction, and the new explants or cells' growth gets stunted, or even die off.
A kid is on a stationary sled, on
snowy ground with its = 0.105.
It takes 71.2 N of force to set
the sled moving. How much
normal force is acting?
(Unit = N)
Answer:
N= 678
Explanation:
What is an electrical current that is made when a magnet moves through a wire?
induced current
reactive current
magnet current
stagnant current
Answer:
stagnant current
Explanation:
stagnant current because eit is