Answer:
For a solar eclipse to occur the moon must be between the earth and the sun (the light of the sun is blocked)'
By definition this is a new moon (which occurs when the moon cannot be seen because it is located between the sun and the earth).
NEED HELP!!! 13 POINTS!!!!!!
According to Newton’s first law of physics, which explains what happens to a baseball when it is hit with a bat?
OPTIONS:
A.
The course of the ball cannot be changed as long as it remains in motion.
B.
The ball lacks force or momentum but gets momentum when it hits an unbalanced force.
C.
The ball is an unbalanced force and can only have its course altered by a stationary object.
D.
The ball is traveling at a steady speed until it hits an unbalanced force and changes direction.
PLEASE NO LINKS
Answer:
Your answer will be D.
The ball is traveling at a steady speed until it hits an unbalanced force and changes direction.
Explanation:
The ball is traveling at a steady speed until it hits an unbalanced force and changes direction. The correct option is D.
Thus, An unbalanced external force acts upon an item, Newton's first law of motion, often known as the law of inertia, asserts that an object at rest will remain at rest and an object in motion will continue to move in the same direction and at the same pace.
When a baseball is struck with a bat, it is originally at rest or moving steadily forward.
The ball experiences an imbalanced force when it is struck by the bat, altering its direction and speed. The bat's application of external force is what causes this shift in motion.
Thus, The ball is traveling at a steady speed until it hits an unbalanced force and changes direction. The correct option is D.
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In addition to time, which of the following must be used for a more complete description of the average acceleration of an object?
A. Mass
B. Displacement
C. Velocity
D. None of the above
Two identical automobiles are
approaching a yellow light. The first
automobile has a speed 30 mi/hr, and
the second automobile has a speed
42 mi/hr. Compared to the 30 mi/hr
automobile, the stopping distance of
the 42 mi/hr automobile will be
a) the same
c) double
b) 1.4 times longer
d) 4 times longer
Answer:
i think that it is b but I could be wrong
A rubber duck sat is floating on the surface
on the water. 10N of weight is acting
DOWNWARDS on the water. What other
force must be acting to allow the duck to
float?
The other force that must be acting on the duck is upthrust of 10 N.
The given parameters;
weight of the rubber duck, W = 10 NWhen the weight of the object is equal to the upthrust, the apparent weight will be zero and the object will float in the liquid. This is known as principle of floatation.
Since the given weight of the rubber duck is 10 N, then the upthrust on the duck will be 10 N to enable the duck float on the water.
Thus, the other force acting on the duck is upthrust of 10 N.
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1.Which of the following describes kinetic energy?
a. It is the energy of objects at rest. c. It is the energy of unmoving objects.
b. It is the energy of moving objects. d. It is the energy of objects in motion and in position.
2. What kind of energy does a sling shot that is pulled back all the way has?
a. kinetic energy c. elastic potential energy
b. chemical energy d. gravitational potential energy
3. Which of the following affects the amount of potential energy of an object?
a. mass and height b. mass and velocity c. height and velocity d. mass only
4. How will you increase the potential energy of a diver in the Olympics?
a. work out and lose weight c. go to a lower diving board
b. always jump d. go to a higher diving board
5. Which is the best example that something has kinetic energy?
a. water in the glass c. crawling ants on the wall
b. an apple placed at the rooftop d. car parked in front of the house
6. Which quantity does not affect the amount of kinetic energy?
a. mass b. velocity c. location d. none of these
7. If two objects with different mass are placed on the same table, which one contains
more energy?
a. The object with less mass c. Both objects have same amount of energy
b. The object with greater mass d. None of the two objects
8. A 60 kg man walks from the ground to the top of a 80 m tall building. How much
increase in gravitational potential energy is there? (Take g = 10N/kg)
a. 600 N b. 4800 J c. 8000 J d. 48000 J
9. The baseball pitcher throws a 0.145 kg baseball at a velocity of 30.0 m/s. What will be
the kinetic energy of the ball?
a. 62.55 J b. 65.25 J c. 65.55 J d. 62.25 J
10. If you are going to place a stone on a hill, at which point of the hill will it contain the
greatest amount of potential energy?
a. halfway down the hill c. top of the hill
b. on the hillside d. bottom of the hil
Explanation:
1.a
2.
a
3.
a
4.
a
5.
d
6.
a
7.
a
8.
b
9.
b
10.
c
I did all I can please mark me as brainllestplease help me i’m stuck on this question
What is Newton's first law of motion?
A. For every force there is an equal and opposite reaction force.
B. If a net force is applied to an object, then the object will accelerate.
C. An object will remain at rest or continue moving in a straight line with a constant speed unless acted on by an unbalanced force.
D. The gravitational force between two objects is proportional to their masses and inversely proportional to the distance between them.
Answer:
C
Explanation:
Newton's first Law of Motion is also known as law of inertia, which states that "an object at rest remains at rest, and an object that is moving will continue to move straight and with constant velocity, if and only if there is no net force acting on that object". As such, the correct option should be C.
Option A is Newton's third Law of Motion.
Option B is Newton's second Law of Motion
Option D is Newton's Law of Universal Gravity
Describe three characteristics of electromagnetic waves that make them useful for transmitting signals.
Answer:
characteristics of electromagnetic waves:-
electromagnetic waves are transverse waves;electromagnetic waves can travel through a vacuum;electromagnetic waves travel at exactly the same speed in a vacuum, the speed of light, 300,000,000 m/s.A characteristics Feature of electromagnetic waves that make them useful for transmitting signal is that they are easily transmitted through
In physics, electromagnetic radiation is defined as waves created as a result of the electromagnetic field vibratons moving through space, carrying electromagnetic energy. The waves produced includes radio waves, microwaves, infrared, light, ultraviolet, X-rays, and gamma rays.
The character of an electromagnetic wave is dependent on its frequency or wavelength making each electromagnetic spectrum having their own range of uses.
For transmitting signals, Radio waves as well as Microwaves is useful , while the former help transmit Information through radio and TV stations the later is used in satellite communications, this is because
They are easily transmitted through air. if absorbed by the human body, cannot cause damageThier directions can be changed or switched.See more here:https://brainly.com/question/877487
what falling object inspired newton to think about gravity
Legend has it that a young Isaac Newton was sitting under an apple tree when he was bonked on the head by a falling piece of fruit, a 17th-century “aha moment” that prompted him to suddenly come up with his law of gravity.
How is air resistance similar to gravity? give me two ways.
Answer:
1. they both act on an object in free fall
Explanation:
2. both help determine how fast the object will accelerate
An unknown element shiny in color, malleable, conducts electricity, and is in group 2 on the periodic table is a non-metal.
True
False
fun little question,
how many atoms do you think is in a star, i wanna know your answer please share.
Answer:
There is 18
Explanation:
What conclusion does the student most likely make based on this data?
Answer:
O Tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.
Explanation:
In the data the student collected, it showed that when the atmosphere is thicker, it slows down the light. With sound however, the sound travels better in thicker stmosphere or solid, than thin air, or steam.
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The leaves of plants contain specialized parts that absorb energy from sunlight. Which feature would help a plant better compete for sunlight?
leaves that change color
colorful flowers
larger overall leaf size
a shorter stem
Answer:
In most plants, the leaves are the main food factories. They capture the sun's energy with the help of chlorophyll in the leaf cells. The chlorophyll traps and packages the energy from the light of the sun in a process called photosynthesis. Leaves usually have a large surface so they can collect the most sunlight.
Explanation:
Hope this helps...maybe
Answer:
C
Explanation:
Pete is driving down 7th street . He drives 150 meters in 18 seconds. Assuming he does not speed up or slow down, what is his speed in km per minute
Answer:
His speed is 8.333 m/s.
Explanation:
how is the moon different during a new moon phase than during a lunar eclipse?
Answer:
because one the moon just resets and the other is a whole other thing
guys help I'm doing a music test today
What is the acceleration of a car that increases its velocity from 0 to 100 kilometers per hour in 10 seconds?
Answer:
0.00278 km/sec2 or 36,000 km/hr2 .
Explanation:
An elevator accelerates upward at 1.2 m/s 2 . the acceleration of gravity is 9.8 m/s 2 . what is the upward force exerted by the floor of the elevator on a(n) 62 kg passenger? answer in units of n.
Answer:
Explanation:
Fr= Fn-P
ma=Fn-mg
Fn= m(a+g)
Fn=62(1.2+9.8)
Fn= 682N
what is linear momentum
Answer:
Linear momentum is defined as the product of a system's mass multiplied by its velocity.
the force on a dropped apple hitting the ground depends upon
Answer:
F=ma
Explanation:
Force = mass * acceleration
Rearange the following equation
5.5t=1.2t^2
[tex]\\ \sf\longmapsto 5.5t=1.2t^2[/tex]
[tex]\\ \sf\longmapsto t^2=\dfrac{5.5}{1.2}[/tex]
[tex]\\ \sf\longmapsto t^2=4.58[/tex]
[tex]\\ \sf\longmapsto t=\sqrt{4.58}[/tex]
[tex]\\ \sf\longmapsto t=2.1[/tex]
A cheetah has an average velocity of 70 mph. If a cheetah was chasing a water buffalo for 23 miles, how long was the cheetah chasing its prey? (Recall that there are 60 minutes in one hour.)
180 minutes
27 minutes
20 minutes
3 minutes
Answer:
20 minutes
Explanation:
Create a proportion.
x = time for 23 miles of travel
70 miles/hr = 23 miles/ x
--- Cross Multiply
70x = 23 --- Divide 70 on both sides
x = 0.32857 hrs....
multiply your value of "x" by 60 min/hr in order to convert to minutes
0.32857 hrs * 60min/1hr
hr(s) cancels out
x = 19.7143... ~ 20 mins
find an expression for the magnitude of the horizontal force f in the figure for which m1 does not slip either up or down along the wedge. all surfaces are frictionless.
We have that the expression for the magnitude of the horizontal force F is
[tex]F=(m_1+m_2)gtan\phi[/tex]
From the question we are told
find an expression for the magnitude of the horizontal force f in the figure for which m1 does not slip either up or down along the wedge. all surfaces are friction-less.
Generally the equation for Normal force is mathematically given as
[tex]N=\frac{n_2g}{cos\pji}[/tex]
Where
a signifies acceleration
[tex]Nsin\phi=m_2a[/tex]
Therefore
Equating above equations
[tex]a=\frac{Nsin\phi}{m^2}\\\\a=gtan\ph[/tex]i
Generally the equation for Force on wedge is mathematically given as
[tex]F=m_1a+Nsin\phi[/tex]
[tex]F=(m_1+m_2)gtan\phi[/tex]
Therefore
The expression for the magnitude of the horizontal force F is
[tex]F=(m_1+m_2)gtan\phi[/tex]
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who is the target group of referred to or described in the text about gabu?
what is the main cause of temperature changes in the atmosphere
Answer:
The main driver of climate change is the greenhouse effect. Some gases in the Earth's atmosphere
if a 5,000 investment earn $1,575 interest over over 18 years what is the annual interest rate
Answer:
I = 1575 / 5000 = 31.5 % interest on investment
(1 + i)^18 = 1.315 where i interest is earned per year
One can use logs or
1 + i = 1.315^1/18 = 1.0153
So the annual interest rate is .0153 or 1.53%
Or
5000 (1 + i)^18 = 6575
(1 + i)^18 = 1.315
18 log (1 + i) = log 1.315
log (1 + i) = .006607
1 + i = 1.0153
i = .0153 = 1.53%
Can anyone Hele please I don't know how to convert the light years in order to get an equation like the one on Alpha Centauri in the picture, but I do know how to log it.
Answer:
Log 10 ( 4.16x10^16)
Explanation:
Other distance from sun you have to search by your self then apply the equation Log 10 ( distance from sun )
Heavier elements like gold are created in the most massive stars and spread through the universe when these stars explode. This explosion is called a
Answer:
Big bang
Explanation:
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A flare fired upward at 49 m/s will reach a height of
Answer:
122.5 meters
Explanation:
We have the third equation of motion:
[tex]\boxed{\mathsf{v^2=u^2+2aS}}[/tex]
v stands for the final velocityu, initial velocitya is the acceleration of the particle in motionS, the distance covered by the same particle.Here, the particle is a flare.
It's initial velocity is 49 m/ s and the final will be zero, that's 'cause the particle comes to a standstill upon reaching its maximum, in case of motion under gravity.
a will be the acceleration due to gravity = 9.8 m/ s²
So, here are the terms we've got for the third eqn. of motion:
v = 0 m/ su = 49m/ sa = - 9.8 m/ s (the force of gravity acts downwards, and that's the direction we say is negative)Now, the term we've got to find out is the height reached by the flare, i. e., S.
=> v² = u² + 2aS
=> (0)² = (49)² + 2×(-9.8)×S
=> 0 = 49×49 - 2×9.8×S
=> 2×9.8×S = 49×49
[tex]\implies \mathsf{S=\frac{49\times 49}{2\times9.8} }[/tex]
=> S = [tex]\frac{245}{2}[/tex]
=> S = 122.5 metersAnd, S is the maximum height the flare covers, so the answer is 122. 5 meters
