What is the acceleration of a 100 kg object pushed by Beau with a force of 500 N? Write out your equation.
Answer:
ProvideD :
Mass ( m ) = 100 kg , Force ( F ) = 500 NTo FinD :
Acceleration ( a )SolutioN :
We know , F = ma so put up the values and then solve for a[tex] \longrightarrow \tt \: 500 = 100a[/tex]
[tex] \longrightarrow \tt \: \frac{500}{100} = a[/tex]
[tex] \longrightarrow \tt \: a = \: \boxed { \tt{5 \: ms ^{ - 2} }}[/tex]
The acceleration produced is 5 ms ^ -2 .--------------- HappY LearninG <3 --------------
All electromagnetic radiation in the optical portion of the em spectrum have what characteristics?
What happens in the gray zone between solid and liquid?
Answer:
Hence, the transition has to cross the grey zone from liquid to solid or solid to liquid. This grey zone transition is crucial, including the intermolecular forces acting on the molecules and each atom, making the change in state from hot to cold and cold to hot.
Explanation:
Answer:
Hence from liquid to solid or solid to liquid the transition has to cross the grey zone. This grey zone transition is is very crucial which includes the inter molecular forces acting on the molecules and each atoms which makes the change in state from hot to cold and cold to hot.
Explanation:
this is based on ideal gas law PV=nRT.
Where P is pressure, V is volume, R is gas constant and T is temperature. Hence from liquid to solid or solid to liquid the transition has to cross the grey zone.
This grey zone transition is is very crucial which includes the inter molecular forces acting on the molecules and each atoms which makes the change in state from hot to cold and cold to hot.
The best example is ice crystal formation and water formation from ice crystal .
Hence the inter molecular force of attraction happens to be involved with changes in grey zone
How long does it take to travel?
120 miles at 40mph
Answer:
it takes 3 hours to travel
Explanation:
120 ÷ 40 = 3
Step 1. distance = speed * time or time = distance/speed.
Step 2. time = 120 miles/(40 miles/hour) = 3 hours.
Step 3. ANSWER: It would take 3 hours to travel 120 miles at 40 mph.
A force of 800 n is used to stop an object with a mass of 50 kg moving with a velocity of 35 m/s. how long will it take to stop this object?
variables:
equations:
answers
Answer:
KE = F * S initial kinetic energy will expended in stopping object
1/2 M V^2 = F * S
S = 1/2 * 50 * 35^2 / 800 = 38.3 m stopping distance
If you need to know the stopping time involved -
(V2 - V1) = a t where the change in velocity is 35 m/s
a = F / M = 800 / 50 = 16 m/s^2 deceleration of mass
t = 35 / 16 = 2.2 sec
Find the magnitude of the induced current that flows through the resistor shown in the figure at t=3 s, if the magnetic field through the wire loop of 3.0 cm radius changing with time according to this equation B=2t^2−3.
The magnitude of the induced current is, (I=9 /R). The principal of ohm's law is employed in the given problem.
What is induced emf?Emf is the production of a potential difference in a coil as a result of changes in the magnetic flux passing through it.
When the flux coupling with a conductor or coil changes, electromotive force, or EMF, is said to be induced.
The given data in the problem is;
B is the magnetic field,= 2t^2−3.
t(time)=3 sec
The induced EMF is found as;
[tex]\rm E= \frac{d \phi}{dt} \\\\\ \rm E= \frac{d(2t^2-3)}{dt} \\\\\ E=4t-3\\\\\ t= 3 sec \\\\ E=12-3 \\\\\ E= 9 \ V[/tex]
From ohm's law;
E=IR
I=E/R
I=9 /R
Hence,the magnitude of the induced current is, (I=9 /R).
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Calculate the frequency of a wave which goes through 10 cycles in 5 s
Please help me with those multiple choice
Answer:
11. Light waves are electromagnetic (created by electromagnetic impulse)
12. Light waves in a medium are slower V = C / Nm where Nm is the index of refraction of the medium
13. The frequency of the vibration remains the same
14. The wavelength of light in the medium is less
λ = V / f and it was determined in 12 that the velocity is less in the medium
Can someone please answer this, ill give you brainliest Would be very appreciated.
Water cycle basically involves the change of water into liquid to vapour and again to liquid states through a cyclic manner .
The answers are
EvaporationTranspirationCondensationprecipitationrunoffseapageground waterCan someone please answer this, ill give you brainliest Would be very appreciated.
Answer:
True
Explanation:
The spheres of the Earth are : Biosphere, Hydrosphere, Geosphere, and AtmosphereWater travels through liquid form only (known as water itself) through 3 spheresIt travels through the atmosphere in gas form (vapor) or liquid form itself as rainAnswer:
True
Explanation:
The four spheres of atmosphere are
Hydrosphere BiosphereGeosphereAtmosphereWater begins its journey from hydrosphere then goes through atmosphere, biosphere and geosphere respectively
Trent builds a model electric motor. when he connects a battery to the motor, the motor spins through a half rotation and stops. which is the most likely solution to the problem? replacing the battery, because it is not providing current installing new brushes, because they are not making a good connection checking the commutator, because the current is not reversing adding more wire coils in the armature, because the electromagnet is too weak
The most likely solution to the motor spinning a half rotation and stopping is checking the commutator, because the current is not reversing.
What are electric motors?Electric motors are devices that convert electrical energy into mechanical energy used in driving other devices.
Electric motors require batteries to work or A.C. currents to work.
The most likely solution to the motor spinning a half rotation and stopping is checking the commutator, because the current is not reversing.
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Answer:
c
Explanation:
edge 2022
Which type of radiation is associated with high frequency waves?
Answer:
Gamma rays
Explanation:
have the highest energies, the shortest wavelengths, and the highest frequencies. Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation.
Mr b Kayla and gabby are working out to get fit fr the summer Mr b is using a barbell that weighs 50kg and lifts it a distance of 4 meters. Kayla is using a barbell that weighs 45kg and lifts it a distance of 7 meters and gaby is using a barbell that weighs 47kg and lifts it a distance of 8m who is working the hardest
This question involves the concepts of potential energy and work.
"Mr. Gabby" is working the hardest.
Who is working the hardest?In this case, the work done by each person is equal to the potential energy produced by raising the barbell.
[tex]W = P.E=mgh[/tex]
where,
W = work done m = mass of barbellg = acceleration due to gravity = 9.81 m/s²h = height raisedFor Mr. bm = 50 kgh = 4 mTherefore,
[tex]W=(50\ kg)(9.81\ m/s^2)(4\ m)\\W=1962\ J[/tex]
For Mr. Kaylam = 45 kgh = 7 m
Therefore,
[tex]W=(45\ kg)(9.81\ m/s^2)(7\ m)\\W=3090.15\ J[/tex]
For Mr. Gabbym = 47 kgh = 8 mTherefore,
[tex]W=(47\ kg)(9.81\ m/s^2)(8\ m)\\W=3688.56\ J[/tex]
It is clear that most work is done by Mr. Gabby.
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Determine the work done to raise a mass of 8.0 kg through a height of 2.5 m on this planet.
Answer:
196 J
Explanation:
Formula
Work done(W) = Mass (m) x gravity (g) x height (h)Here, we are given :
m = 8.0 kgg = 9.8 m/s² (on Earth)h = 2.5 mSolving
W = 8 × 9.8 x 2.5W = 20 × 9.8W = 196 J50 points physics question (multiple choice) Will give brainliest!
There are two systems that contain only the fundamental frequency and they are the systems C and D.
What is fundamental frequency?The term fundamental frequency refers to the lowest frequency of a vibrating body. It does not include the overtones or the harmonics.
From the image shown in the question, there are two systems that contain only the fundamental frequency and they are the systems C and D.
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Equator
01
Equator
A
B
The figure above shows the Earth at two different positions in its orbit around the Sun. If Texas is in the Northern Hemisphere,
which is the top half of the Earth, which position corresponds to summer in Texas?
A. position B
B. neither position A nor position B
C. position A
D. both position A and position B
Answer:
A) position B
As the earth rotates about its axis (shown tilted), the northern half will receive more sunlight than the southern half which is in winter
The shortest distance between the initial position and the final position of moving body is called .............
The Answer Is Displacement
Can someone please answer this, ill give you brainliest Would be very appreciated.
The order is followed as
photosynthesisDecompositionCombustionRespirationDiffusionAnswer:
See below ~
Explanation:
Done from left to right :
Box 1 : Photosynthesis
Box 2 : Respiration
Box 3 : Combustion
Box 4 : Decomposition
Box 5 : Diffusion
lookup the composition for air. what is the percentage of nitrogen and oxygen present in the air we breathe
78 percent nitrogen and 21 percent oxygen
What is the ratio between the initial and final kinetic energies of a car, if its velocity is increased by four times?
1:8
1:7
1:16
Let initial velocity be v
So
initial kinetic energy
KE=1/2mv²Final velocity is four times v i.e 4v
Final kinetic energy
KE=1/2m(4v)²KE=1/2m(16v²)Find ratio
1/2m(16v²):1/2mv²16v²:v²16:1Or
1:16Option C
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How much force is required to accelerate a 12kg mass at 10m/s/s
Answer:
100N
Explanation:
On an ice skating rink, a girl of mass 50 kg stands stationary, face to face with a boy of mass 80 kg. the children push off of one another, and the boy moves away with a velocity of 3 m/s. what is the final velocity of the girl? –1.9 m/s 1.9 m/s –4.8 m/s 4.8 m/s
The final velocity of the girl after the collision is determined as -4.8 m/s.
Final velocity of the girl
The final velocity of the girl is determined from the principle of conservation of linear momentum.
m1u1 + m2u2 = m1v1 + m2v2
50(0) + 80(0) = 50(v1) + 80(3)
0 = 50v1 + 240
50v1 = -240
v1 = -240/50
v1 = -4.8 m/s
Thus, the final velocity of the girl after the collision is determined as -4.8 m/s.
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Compare solar heating panels and solar electric panels.
pls I really need help
Answer:
We know that a solar electrical panel converts sunlight to electricity by means of solar cells and then, the electricity can be used as any electrical current.
I am not familiar with solar heating panels but assume that a liquid is heated by sunlight and then circulated thru the area that needs heating - it converts heat from sunlight to usable heat. The heat energy could also be stored and delivered at a different time (accumulated during the day and delivered at night). This is somewhat similar to a company freezing water at night when electricity is cheaper and then using the cooled water during the day for cooling.
I need help with this ASAP!!
Answer:
C
Explanation:
High pitch due to high frequency b/c of doppler effect. The sound waves in front of the vehicle are being squashed together by the moving ambulance. This causes more vibrations to reach your ear per second.
how do you get this equation?
please help
Answer:
It's a kinematic equation.
Explanation:
x displacement = (velocity_final * time) - (0.5 * acceleration * time * time)
You should be given a value, context(word problem), or diagram.
If you're deriving for a term just isolate the term.
If you're asking why the -(0.5 * acceleration * time * time) is negative instead of positive, would need context.
In a nuclear reactor a moderator is used to
Answer: A material called moderator is used to slow down the neutrons released during nuclear fission. The source's neutrons have a high speed and energy. The neutrons' speed is slowed by heavy water or graphite moderators.
Explanation:
Match each type of heat transfer method with its description.
Match each type of heat transfer method with its description.
Conduction | Convection | Radiation
relates to density differences within fluidsdoes not require a medium or physical contact to transfer heat. occurs during physical contact between solid objects not in thermal equilibriumAnswer↷Conduction ↪ occurs during physical contact between solid objects not in thermal equilibrium.
________________________________
Convection↪ relates to density differences within fluids.
________________________________
Radiation ↪does not require a medium or physical contact to transfer heat.
________________________________
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___ radars show everything in fhe sky from servere weather to birds and mosquitoes to tornado debris
Answers:
Polar
Dopper
Geostationary
Orbiting
Answer:
doppler
Explanation:
The following diagram shows two meteors with masses of 1,000 kilograms and 3,000 kilograms spaced 10 meters apart. What is the magnitude of the gravitational force exerted by the 1,000 kg meteor on the 3,000 kg meteor? 2 × 10-9 N, 2 × 10-6 N, 7 × 10-10 N, 2 × 10-2 N
The attraction between masses as small as our bodies, or even objects the size of skyscrapers, is incredibly small. For example, two 1.0-kg masses located 1.0 meter apart exert a force of 6.7×10−11N 6.7 × 10 − 11 N on each other.Answer:
Explanation:
Even between objects the size of skyscrapers or masses as small as our bodies, there is incredibly little attraction. For instance, a force of 6.71011N is generated when two 1.0-kg masses are placed 1.0 meters apart. 6.7 10 11 N on top of one another.
What magnitude of gravitational force by the meteor?M/s2 is its SI unit. Its vector nature—which includes both magnitude and direction—makes it a quantity. The unit g stands for gravitational acceleration. At sea level, the standard value of g on earth's surface is 9.8 m/s2.
The magnitude of PQ is represented symbolically as | PQ |. The Distance Formula can be used to determine a vector's magnitude if its start and end points' coordinates are known.
Therefore, The distance between a vector's starting point P and ending point Q is its magnitude.
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A 5-kg ball rolling at a speed of 3 m/s strikes a 2-kg ball at rest. The 5-kg ball then comes to a stop and the 2-kg ball begins to roll forward. Determine how fast the 2-kg ball is moving.
Velocity: _ m/s
Answer:
7.5m/s
Explanation:
Law of conservation of momentum: momentum in a system before collision equals to that after collision/
5kg*3m/s=2kg*v
15kgm/s=2kg*v
v=7.5m/s
