Answer:
200W
Explanation:
W=F*d
P=W/t
P=(100)(10)/5
P=200
A rock with a mass of 6 grams has greater thermal energy than a rock with a mass of 7 grams. True or false?
Answer:
Explanation:
False
I need help plzz help I’ll mark you brainliest
Answer:
a b c d
Explanation:
A baseball is struck home plate and acquires a speed of 60m/s. It rises to a height of 100.0 m above its starting level. Find its speed at the height
Answer:
40 m/s.
Explanation:
From the question given above, the following data were obtained:
Initial velocity (u) = 60 m/s
Height (h) = 100 m
Acceleration due to gravity (g) = 10 m/s²
Final velocity (v) =?
The velocity at height 100 m can be obtained as follow:
v² = u² – 2gh (since the ball is going against gravity)
v² = 60² – (2 × 10 × 100)
v² = 3600 – 2000
v² = 1600
Take the square root of both side
v = √1600
v = 40 m/s
Thus, velocity at height 100 m is 40 m/s
What is another term for a pull on an object? O A. Acceleration O B. Speed O c. Force O D. Velocity
Answer:
Acceleration
Explanation:
Name at least four factors involved in performing a good throw.
Answer:
You need to have a good stance, release, power, speed, body, movement, and aim. You should be able to throw an effective pass or throw by using your body and having the correct amount of balance and form
Define the types of friction and give FOUR examples of each
Static Friction
Rolling Friction
Sliding Friction
Fluid Friction
Answer:
Static Friction - acts on objects when they are resting on a surface
Sliding Friction - friction that acts on objects when they are sliding over a surface
Rolling Friction - friction that acts on objects when they are rolling over a surface
Fluid Friction - friction that acts on objects that are moving through a fluid
Explanation:
Examples of static include papers on a tabletop, towel hanging on a rack, bookmark in a book , car parked on a hill.
Example of sliding include sledding, pushing an object across a surface, rubbing one's hands together, a car sliding on ice.
Examples of rolling include truck tires, ball bearings, bike wheels, and car tires.
Examples of fluid include water pushing against a swimmer's body as they move through it , the movement of your coffee as you stir it with a spoon, sucking water through a straw, submarine moving through water.
Why are bases of pillars of bridge
made broad?
Answer:
to lower the centre of gravity
Explanation:
What is the length of a simple pendulum oscillating on Earth with a period of 0.5s?
Explanation:
don't u know that a pendulum can't oscillate on earth idiot you don't have senses or wgat. just wrote the question with senses gone to graze the grass in the garden.
using appropriate properties find -5/15×4/6 + -3/6×5/15.
pls answer fast winner gets 100 points
Answer:
-0.39 (rounded to the nearest hundredth)
Explanation:
The exact answer is -0.388888889
Answer:
3.7
Explanation:
You are gonna want to start with -5/15 and get -1/3
now we have -1/3 times 2/3
-1/3 x 2/3 - 1/2 x 1/3
-.17 = -1/2 x 1/3
-.2=-1/3 x 2/3
-.2 - .17=3.7Explain how it is that you could have 2 parents with brown eyes, but you have blue eyes. Talk about the role chromosomes, genotypes, and alleles play in making something like that happen.
Help please will give b to the best one!
Answer:
If both parents had a recessive allele for blue eyes and they had a brown phenotype it is completely possible for the child to have blue eyes.
Explanation:
Chromosomes play the role of transfering the encoded strands of DNA to the child. Genotypes are the traits or groups of traits transferred and need to carry the trait of blue eyes in order for the child to have them. As long as the parents had a recessive allele for blue eyes they could have a blue eyed child.
(apologies for the incomplete answer, I accidentally hit send)
A watch costs Rs. 8136 when it is 10% discounted and 13%
VAT is added then find out discount and VAT amount? By
how much percentage VAT amount is more than discount
amount.
Ans: 17%
Explanation:
lanat kabool kar
f a certain quantity of gas has a volume of 30 cm3 at a
pressure of 1 × 105 Pa, what is its volume when the
pressure is
a 2 × 105 Pa,
b 5 × 105 Pa?
Assume the temperature remains constant is
Which characteristic should a good scientific question have?
It should lead to a hypothesis that is testable.
It should have an answer that is already known.
It should not be answerable just through investigation.
It should include many variables about a wide range of topics.
The characteristic that a good scientific question should have is that it should lead to a testable hypothesis. This means that the question should be specific enough to allow for the formulation of a testable hypothesis that can be supported by empirical evidence.
What is another characteristic of a good scientific question?A good scientific question should also be relevant to the field of study and potentially contribute to our understanding of a phenomenon. The answer to the question doesn't need to be already known, and it may not be answerable just through investigation.
What is the empirical evidence?Empirical evidence is the information or data obtained through observation, measurement, and experimentation. The evidence is based on direct or indirect observations of the natural world, as opposed to assumptions, beliefs, or opinions.
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16. A strong acid has a pH close to 7
A.True
B.False
Answer:
I think it's true.
Hope this helps .
Explanation:
The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic.
Pretend you are an astronaut standing on the moon while the moon is in full position. ou are standing in the middle of the side of the moon closest to earth. How would the ground look? How would the earth look? In your answer describe what is in sunlight and what is in darkness.
Answer:
During a full moon phase, the Earth is aligned between the sun and the moon, wherein one side of the Earth is facing the sun, while the other side that faces the moon is in darkness.
In this case, when the astronaut stands in the near side of the moon, the ground is lit up due to the sun’s light that it reflects. On the other hand, the astronaut’s view of the Earth would look dark.
Explanation:
Answer:
the grond will be something like something that has holes in them and the earth will look like a big ball also the moon will be in darkness and the earh will have light. l guess in my imagination
Pressure depends upon
a) force and area of cross - section
b) temperature and area of cross - section
c) volume and temperature
d) none of these
Given the height of rod,length of shadow of tree and length of shadow of the rod, estimate the height of the tree? Given:height of rod=150cm,Length of shadow of the rod=120cm and length of shadow of the tree =800cm
Answer:
1000 cm.
Explanation:
To obtain the estimated tree height :
(Height of rod / length of rod shadow) = (height of tree / length of tree shadow)
Substituting values into the formula :
(150cm / 120 cm) = (height of tree / 800 cm)
Using cross multiplication :
Height of tree * 120 = 150 * 800
Height of tree = (150 * 800) / 120
Height of tree = 120,000 / 120
Height of tree = 1000
Hence, estimate height of tree = 1000 cm
Justify that animals and plants can survive without surface tension
Answer:
oxygen and carbon dioxide
Explanation:
are soluble in water animal and plants can utilize these dissolved gases for resporation and photosynthesis and hence can survived in water
Two harmonic waves moving in the same direction are described by y1(x,t)=10.2sin(4x-700t) and y2(x,t)=10.2sin(4x-700t-7.9). What is the amplitude of the resultant wave at interference
Answer:
14.42 units
Explanation:
The waves are given as follows :
[tex]y_1(x,t)=10.2\sin(4x-700t)\\\\y_2(x,t)=10.2\sin(4x-700t-7.9)[/tex]
We need to find the amplitude of the resultant wave at interference. Let it be A. So,
[tex]A=\sqrt{10.2^2+10.2^2} \\\\=14.42\ units[/tex]
So, the amplitude of the resultant wave is equal to 14.42 units.
Which electromagnetic waves have the longest wavelength and lowest frequencies?
O infrared waves
O ultraviolet rays
O radio waves
O gamma rays
Answer:
gamma rays
Explanation:
they have longer wave lengths than the others
list down the different phases of the Moon
Answer:
new Moon.
waxing crescent Moon.
first quarter Moon.
waxing gibbous Moon.
full Moon.
waning gibbous Moon.
last quarter Moon.
waning crescent Moon.
Explanation:
Answer:
NEW MOON
WAXING CRESCENT
FIRST QUARTER
WAXING GIBBOUS
FULL MOON
THIRD QUARTER
WANING GIBBOUS
WANING CRESCENT
Explanation:
HOPE IT HELPS
define load distance and effort distance
Answer:
Distance a load moves when acted on by a load force. 8 Effort Force & Effort Distance Effort Force: Force exerted by a person (or motor) when using a machine to lift a load. Effort Distance: The distance over which the effort force acts in a simple machine.
Answer:
Load Distance: Distance a load moves when acted on by a load force. 8 Effort Force & Effort Distance Effort Force: Force exerted by a person (or motor) when using a machine to lift a load. Effort Distance: The distance over which the effort force acts in a simple machine
Explanation:
Load Distance: Distance a load moves when acted on by a load force. 8 Effort Force & Effort Distance Effort Force: Force exerted by a person (or motor) when using a machine to lift a load. Effort Distance: The distance over which the effort force acts in a simple machine
Which of the following is a characteristic of a mechanical wave but not a characteristic of an electromagnetic wave?
Mechanical waves have a crest but no trough is a characteristic of a mechanical wave but not a characteristic of an electromagnetic wave.
What is an electromagnetic wave?The waves that are related to both electricity and magnetism are known as electromagnetic (EM) waves. These waves are made up of time-varying electric and magnetic fields that travel over space.
Mechanical waves have a peak but no dip, which is a mechanical wave characteristic but not an electromagnetic wave characteristic.
Hence, mechanical waves have a crest but no trough is a characteristic of a mechanical wave but not a characteristic of an electromagnetic wave.
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What is the frequency of a sound wave traveling at 335 m/s with a wavelength of .55 m?
Answer:
v=f* lamba
f=v/lamba
f= 335/55
f=6.45 hertz
Help!!! Please need it fast. If correct I’ll give b
Answer:
if bother parents have brown eyes but they carry the allele for blue eyes a quarter of the kids will have blue eyes and three quarters will have brown eyes. hope this help I'm sorry if it doesn't.
what is input and output in science physics
Answer:
Input work is the work done on a machine as the input force acts through the input distance .Other ways it would be the work done on a body or system, that is, forces that are applied to the body or system. This is in contrast to output work which is a force that is applied by the body or system to something else. Output work is the work done by a machine as the output force acts through the output distance. The machine does to the object to increase the output distance.
Explanation:
Explain why a person cannot dive in the Mariana Trench in the Pacific Ocean to a depth of approx. 11,000 m without appropriate protective equipment
Answer:
Plzzzz answer fast......
what is the wavelnegth of an earthquake wave if it has a speed of 10 km/s and a frequency of 1.5 Hz
3. The atmospheres of Mars and Venus are mostly carbon dioxide. Earth'satmosphere contains only a fraction of a percent of carbon dioxide. Whyis Earth's atmosphere so different from those of Mars and Venus?
Answer:
Earth's atmosphere is a mixture of nitrogen (79%), oxygen (20%), and a small fraction of carbon dioxide, water vapours and other gases. However, the atmospheres on Venus and Mars mainly consist of carbon dioxide.
Explanation:
Although there are large oceans of liquid water on Earth, Venus and Mars' atmospheres are predicted to be dominated by carbon dioxide. Since carbon dioxide is easily dissolved in water, our oceans absorbed a large portion of the atmospheric CO2, leaving an ammonia-dominated environment.
What is mars ?Only Mercury is smaller than Mars, which is the fourth planet from the Sun and the second-smallest planet in the Solar System.
Venus' waters vanished as it heated up more and more. Mars is composed of 95% carbon dioxide. Its CO2 creates clouds of dry ice. Mars turned frigid and dry, while Venus heated up and dried out.
Nitrogen makes up 79% of the atmosphere on Earth, followed by oxygen at 20%, and only a trace amount of carbon dioxide, water vapor, and other gases. This paves the way for life to exist on Earth. However, carbon dioxide dominates the atmospheres of Venus and Mars.
Thus, there are large oceans of liquid water on Earth, Venus and Mars' atmospheres are predicted to be dominated by carbon dioxide.
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You serve a volleyball with a mass of 2.5 kg. The ball leaves your hand with a speed of 23 m/s. What is the kinetic energy of the ball?
Answer:
661.25, I believe!
Explanation:
KE = (1/2)(2.5)(23)^2
KE=(1.25)(529)
KE= 661.25