Answer:
80%.
Explanation:
Question didn't state what is being looked for, but then....
Weight of the box, w = 100 N.
Length of the plane, L = 5 m
Force used, = 75 N
Length pushed through, = 3 m
Looking at the stated parameters, the first thing that comes to mind is to look or calculate for the efficiency of the machine.
Tha efficiency can be gotten by using the relation
Change in energy divided by work done. This is gotten by saying
(100 * 3) / (5 * 75) =
300/ 375 = 0.8
Therefore, the efficiency of the machine has been calculated to be 80% or 0.8
the distance from a crest to a trough is called the wave length
Answer:
Explanation:
The highest surface part of a wave is called the crest, and the lowest part is the trough. The vertical distance between the crest and the trough is the wave height. The horizontal distance between two adjacent crests or troughs is known as the wavelength.
I hope it's helpful!
please help me i need help right away!!!!
Answer:
Direct current is the flow of current through a current carrying conductor in the same direction from positive to negative ends. Alternating current is the type of current our mains have where the current is constantly changing direction at a certain rate
Explanation:
Direct current (DC) is a form of electricity that has a unidirectional flow, such that the current path in the current carrying conductor of a circuit is, at all times, in a specific single direction
Alternating Current (AC) is electricity continuously reverses its direction of flow and the magnitude of electricity at a given frequency with time. It is the of current found in electric supply cables that are found in our houses
Therefore, we have;
Direct current is the flow of current through a 1. current carrying conductor in the 2. same direction from positive to negative ends. Alternating current is the type of current our 3. mains have where the current is constantly 4. changing direction at a certain rate
A crowbar is used to lift a load of 1200 N by placing it at a distance of 25 cm from the fulcrum.
the force required at 60 cm from the fulcrum to balance the load.
Answer:
500 N
Explanation:
From the question,
Sum of clockwise moment = sum of anti clockwise moment.
F×d = F'×d'.................. Equation 1
Where F = Force applied to lift the load, d = distance, F' = Force required, d' = distance of the required force from the fulcrum
Make F' the subject of the equation
F' = F×d/d'.................. Equation 2
Given: F = 1200 N, d = 25 cm, d' = 60cm.
Substitute these values into equation 2
F' = 1200×25/60
F' = 500 N.
Hence the force required to balance the load is 500 N
Which of the following statements about open clusters is true? Group of answer choices All stars in the cluster are approximately the same age. There is an approximately equal number of all types of stars in the cluster. All stars in the cluster are approximately the same color. All stars in the cluster have approximately the same mass. All stars in the cluster will evolve similarly.
Answer:
All stars in the cluster are approximately the same age.
Explanation:
An open cluster refers to a group of around a thousand stars such that these stars are surrounded by the nebula. All-stars in the cluster are approximately the same age. Milky Way consists of more than 1000 such open clusters.
Examples of an open star cluster areas follows:
1. Beehive
2. Hyades
3. Pleiades
The speed limit on an interstate highway is posted at 75mi/h. What is the speed in kilometers per hour? In feet per second?
Answer:
See explanation
Explanation:
The conversion factor from miles per hour to kilometers per hour is 1.609344.
Hence;
To convert 75mi/h to kilometers per hour,
75mi/h * 1.609344 = 120.7 kilometers per hour
b)
To convert 75mi/h to feet per second
Since
1 mile per hour = 1.46667 foot per second
75mi/h = 75 * 1.46667 = 110 feet per second
10. WIMPS and MACHOS cannot be seen or felt.
True
False
Answer:
false I believe is the right answer
Answer:
True
Explanation:
Which statement accurately describes renewable energy sources?
A. They include fossil fuels and hydroelectric power.
B. They are found in nearly limitless supply.
C. They take millions of years to form and should be used responsibly.
D. They provide the majority of the energy for the United States.
PLS HELP!! I WILL GIVE BRAINLYIST!!
Answer:
A, They include fossil fuels and hydroelectric power.
Explanation:
Hope this helped!!!! :)) <3
will mark brainliest if correct
Anyone know the answer
A cart moved from rest to a velocity of 80 m/s in 5 seconds. Calculate the acceleration of the cart.
Answer:
A=(80-0)/5
= 16 m/s2
Explanation:
I have a circuit with a 200 V battery which produces 150 W of power. What is the
current in the circuit?
Explanation:
0.75
According to the formula, P=IV
150 = I×200
a ball rolls from rest down an incline with a uniform acceleration of 4m/s². what is it speed after 8 seconds
What’s velocity and acceleration
Answer:
velocity- the speed of something in a given direction.
Explanation:
acceleration- increase in the rate or speed of something.
Which of the following is/are true about magnetic field lines? *
Points away from the south pole and toward the north pole
Uniformly intersect other magnetic field lines
They present the direction and not the force of the magnetic field
They represent the strength of the magnetic field
All of the above
None of the above
Answer:
Explanation:
Interest to
Answer:
Points away from the south pole and toward the north pole
Explanation:
They're magnets fam
Which of the following is NOT a characteristic of noble gases? *
-unreactive
-odorless
-solid at room temperature
-colorless
Answer:
solid at room temperature
Explanation:
they are unreactive
Which is a process that involves collecting information and ideas that are supported by belief or opinion?
The raising and lifting the ball by kicking is called
A Dodge
B. Scoop
C. Passing
D. Toe
I’ll give brainless plis
The raising and lifting the ball by kicking is a B) Scoop
Can anyone do this ? 1. 60°C water is pumped from a tank. What is the maximum height that the pump can be installed? The friction loss in the suction line is 2.2 J/kg. The vapour pressure of 60°C water is 19.93 kN/m2. The NPSHR of the pump is 4.0 m.
Answer:
The max height is approximately 4.106 m
Explanation:
The given parameters are
The friction loss = 2.2 J/kg
The vapor pressure = 19.93 kN/m²
NPSHR = 4.0 m
We have;
4 × 997 × 9.8 = P + 101,325 - 2.2J/kg × 997 kg/m³ - 19930
P = 4 × 997 × 9.8 - (101,325 - 2193.4 - 19930) = -40119.2
P = -40119.2
h = 40119.2/(997 × 9.8) ≈ 4.106
The max height ≈ 4.106 m
The Oort Cloud is about 70 000 times as far as from Earth as Earth is from the Sun. How far away is the Oort Cloud?
Answer:The Oort Cloud is about 70 000 times as far
If a microwave consumes 944 W of power when it is plugged into a 112 V outlet, what is the
resistance of the microwave?
answer: 3.2 volts
i hope this is right
the image represents a sound wave as it goes through several changes. Describe how the waves changes. where does it get louder? where does it get softer?how does the pitch change? how do you know?
someone please help me TvT
Answer:
At point A. it gets kinda loud then at point B. it gets very loud than at point C. it gets quieter than at point D. it gets more silent.
Explanation:
Because you can tell when the waves get large it gets louder and then when the waves get more far apart then it get more quiet. Hope this helped!
When a ray is incident upon a plane mirror as shown in the diagram, what is the angle of refraction?
a) 90 degrees
b) 30 degrees
c) 0 degrees
Answer:
0 degrees
Explanation:
this is because when the light ray hits a surface a medium at 90 degrees then the angle of incidence = 0 , thus light doesn't bend when it enters the medium, no bending means angle of refraction is 0 degrees
hope this helps ,please mark it
help me, what is the shape of solid?
Explanation:
Solids have a definite shape and definite volume.
Answer:
Solids have a definite shape and volume because the particles in them are held together tightly.
Explanation:
Liquids have a definite volume but their particles aren't held together as tightly as solids, so liquids take on the shape of the container they are in. Gases have no definite shape OR volume they just float around because the particles in them are so loose they can take on the shape and volume of any container.
An object has a charge of +2.0 uC. What is magnitude of the electric force on the object by an
electric field of 5.0 N/C?
Answer:
hahahahahahahaahahahaha
Explanation:
wala ka kwenta bobo Wala g utak 150 hahahahahahahahahahaahahahahahahahahahahahahahshahahshshshshahahahahahahahahahahahahaahahahhaahahah
A child pushes a toy truck 2.5 m across a floor with a constant force of 22 N. How much work does the child do on the toy truck?
22/2.5= 8.8 J
22 x 2.5= 55 W
22/2.5= 8.8 W
22 x 2.5= 55 J
Answer:
55j
Explanation:
work= force × distance
We have that When A child pushes a toy truck 2.5 m across a floor with a constant force of 22 N.The work done by the child on the toy truck
W= 55 Joules
22 x 2.5= 55 J
Option D
From the question we are told that
A child pushes a toy truck 2.5 m
A constant force of 22 N.
Generally the equation for the Workdone is mathematically given as
W=f*d
W=22N*2.5
W= 55 Joules
Therefore
When A child pushes a toy truck 2.5 m across a floor with a constant force of 22 N.The work done by the child on the toy truck
W= 55 Joules
22 x 2.5= 55 J
Option D
For more information on this visit
https://brainly.com/question/21811998
how easily a material stretches when force is applied
Answer:
translucent and transparent
Simplify the expression in part H. Following the five payments, what is the net change in the loan amount from Qulana's viewpoint?
Answer:
I'm not sure but, this video's pretty cool: gestyy.com/eyRkH2
Explanation:
pretty scary gameplay
Answer:
After five monthly payments, Quiana’s loan amount changes by $1,237.15.
Explanation:
14. A spoon is placed in a cup of hot
cocoa. The net flow between the
spoon and the cocoa indicates that
they ahve different
O
specific heats
O
heats of fusion
O
initial temperatures
O
melting points
Answer:
Specific heats
Explanation:
32g of water at 60°C is poured into 60g of cold water at 15°C, which is contained in a
calorimeter of mass 40g, and S.H.C of water is 0.1Jg'K'. Neglecting heat loss show that
the resulting temperature is 29°C.
Explanation:
Let thermal capacity of the vessel be C' J K-1
Heat energy given by hot water = 40 x 4.2 x (60 - 30) = 5040 J
Heat energy taken by cold water = 50 x 4.2 x (30 - 20) = 2100 J
Heat energy taken by vessel = C' x (30 - 20) = 10 C' J
If there is no loss of heat energy,
Heat energy given by hot water = Heat energy taken by cold water and vessel
or 5040 = 2100 + 10 C'
or 10 C' = 2940
or C'= 294 J K-1
Thus, thermal capacity of vessel = 294 J K-1.
HOPE IT HELPS mark me in brainliest answers please please please. Determine the pressure due to water at the
bottom of a tank which is 25cm deep and is
four-fifths full of water,
(Density of water = 1000kgm',g=10ms”).
Explanation:
P= d*g*h
P=1000*10*0.25
P=2500 Pa