Answer:
Explanation:
Without the FBD or a good description of the set up, I'd have to say we cannot tell.
If the set up is of the simplest form with a mass on a horizontal surface being acted on by a horizontal force, then that force must be 80 + 25 = 105 N.
As force is a vector, there are an infinite number of other possibilities for force magnitude depending on which direction the force is acting. The mass is also an unknown variable that would affect the applied force magnitude if the direction is not horizontal.
A motor with an operating resistance of 30.0 ohms is connected to a voltage source 4.0 amps of current flow in the circuit. What is the voltage of the source
Answer:
120 V.
Explanation:
voltage V=IxR
= 4x30
= 120 V.
Which of the following is the best hypothesis
Answer:
Melting and frezzing are physical changes
answer the question below
Answer:
1. Shield volcano
Runny,basaltic magma with low silica and low gas content. Has a broad,low profile.
2. Cinder cone volcano
Thick viscosity andesitic magma with high silica content and high gas content. Rapidly solidifying lava forms high,steep-sided cones.
3. Composite volcano
Medium viscosity rhyolitic magma with medium silicon content and medium gas content.Have flatter domes called cones.
Explanation:
Hope it helps you..
Your welcome in advance..(◍•ᴗ•◍)
A jumbo jet collides with a sparrow. If neither exerts a greater force of impact, which experiences greater acceleration and why
Answer:
The sparrow experiences a Much greater acceleration because of its smaller mass.
Explanation:
a = F/m With a constant force, acceleration is inversely proportional to mass.
Peering through a telescope could be considered Step 1 of the scientific method.
True
False
A jet plane is traveling with a velocity of 720 kilometers/hour due north. There is a crosswind of 40 kilometers/hour from the east. Find the resultant velocity and the direction of the jet plane.
A.
720 kilometers/hour in the direction of 3.2° west of north
B.
720 kilometers/hour due north
C.
721 kilometers/hour in the direction of 3.2° west of north
D.
520 kilometers/hour in the direction of 45° east of north
Answer:
Option c is correct v = 721 km/h θ = 3.2°
Explanation:
In pic is further explanation: A triangle means division
The magnitude of the velocity of the plane can be found by calculating the resultant of the two velocities:
R= [tex]\sqrt{(720km ÷ h^)^2 + (40km ÷ h)^2) = 721.1 km ÷ h}[/tex]
The direction can be found as follows:
0 = tan^-1 (720km ÷ h/40km ÷h) = 86.8
where 720 km/h represents the velocity towards north, while 40 km/h represents the velocity towards west, so the angle is measured with respect to east. Therefore:
the direction is 86.8*north of west
(Hope this helps can I pls have brainlist (crown)1
Answer:
See image
Explanation:
Plato
The function of which system is to release energy from food for cells to use and to take oxygen into the blood and to remove carbon dioxide?
Digestive
Circulatory
Respiratory
Excretory
The period of rotation of Mars is 1 day and 37 minutes. Determine its frequency of rotation in Hertz.
The frequency of rotation of Mars is 0.0000113 Hertz.
Given the following data:
Period = 1 day and 37 minutes.To find the frequency of rotation in Hertz:
First of all, we would convert the the value of period in days and minutes to seconds because the period of oscillation of a physical object is measured in seconds.
Conversion:
1 day = 24 hours
24 hours to minutes = [tex]60[/tex] × [tex]24[/tex] = [tex]1440[/tex] minutes
[tex]1440 + 37 = 1477 \; minutes[/tex]
1 minute = 60 seconds
1477 minute = X seconds
Cross-multiplying, we have:
[tex]X = 60[/tex] × [tex]1477[/tex]
X = 88620 seconds
Now, we can find the frequency of rotation of Mars by using the formula:
[tex]Frequency = \frac{1}{Period}\\\\Frequency = \frac{1}{88620}[/tex]
Frequency of rotation = 0.0000113 Hertz
Therefore, the frequency of rotation of Mars is 0.0000113 Hertz.
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A sports car reaches a speed of 50 m/sec in 12 seconds after staring from rest. The acceleration of the car is
Acceleration = (change in speed) / time for the change)
Acceleration = (50 m/s) / (12 s)
Acceleration = (4 and 1/6) m/s²
A small heat engine has an energy input of 1,176 joules, and does 201 joules of work. What is the efficiency of the engine? (round your answer to the nearest whole number percent, but leave off the % symbol)
so, if you calculate it is 13.3%, enter your number as 13.
The efficiency of the engine is 17%.
Given the following data:
Energy input = 1,176 JoulesEnergy output = 201 JoulesTo find the efficiency of the engine:
Mathematically, the efficiency of an engine is calculated by using the formula:
[tex]Efficiency = \frac{E_O}{E_I}[/tex] × [tex]100[/tex]
Where:
Eo is the energy output.Ei is the energy input.Substituting the given parameters into the formula, we have;
[tex]Efficiency = \frac{201}{1176}[/tex] × [tex]100[/tex]
[tex]Efficiency = 0.171[/tex] × [tex]100[/tex]
Efficiency = 17%
Therefore, the efficiency of the engine is 17%.
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A roller coaster has a mass of 585 kg when fully loaded with passengers.
A)If the vehicle has a speed of 18.0 m/s at point a, what is the force (in N) of the track on the vehicle at this point?
B) What is the maximum speed (in m/s) the vehicle can have at point B in order for gravity to hold it on the track?
Point A says the radius is 10m. Point B says radius is 15m.
Answer:
Explanation:
I'm going to ASSUME that point A is at the bottom of a circular curve.
The track must support the weight of the car and also supply the needed centripetal force
F = mg + mv²/R
F = 585(9.81 + 18.0²/10) = 24,692.85
F = 24.7 kN
I'm going to ASSUME that point B is at the top of a circular curve.
The track must support the weight of the car and also supply the needed centripetal force.
At a minimum, the weight can be reduced to zero and all the gravity acceleration acts as centripetal acceleration.
0 = mg - mv²/R
g = v²/R
v = √Rg = √(15(9.81) = 12.1305399...
v = 12.1 m/s
Book A with a mass of 1.00 kg is placed on a horizontal table. Book B with a mass of 0.500 kg is placed on top of book A. What is the magnitude of the normal force exerted on book A by the table?
Answer:
Explanation:
N = mg = (1.00 + 0.500)(9.81) = 14.7 N
The magnitude of the normal force exerted on book A by the table is 14.7 N
ForcesFrom the question, we are to determine the magnitude of the normal force.
The normal force ca be calculated by using the formula
[tex]F_{n} = mg[/tex]
Where [tex]F_{n}[/tex] is the normal force
m is the mass
and g is the gravitational field strength ( g = 9.8 m/s²)
The mass will be addition of the masses since Book B is placed on top of the book.
Thus,
m = 1.00 kg + 0.500 kg = 1.50 kg
Then,
[tex]F_{n} = 1.5 \times 9.8[/tex]
[tex]F_{n} = 14.7 \ N[/tex]
Hence, the magnitude of the normal force exerted on book A by the table is 14.7 N
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con lắc lò xo có m=0,6KG K=30N/m cho nó giao động điều hòa với biên độ 6cm tính thế năng động năng của con lắc khi x=4CM
Answer:
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Explanation:
ndnskskdjdkskdkxjdis bdjdkdnd
Plzz help mee guys I need the ans
Answer:
the answer is c
Explanation:
copper and silver are the only 2 conductors listed.
two balls are dropped from rest and allowed to fall for 1 s and the other for 3 s, compare the distances they have fallen
can someone help with this plss
Answer:
push,weight,friction
Explanation:
Bcs it has 3
What is the earths layers?
how did the Ojibwe protect walleye populations?
a.) they count the total number of walleye eggs that a female lays each year.
b.) did you Spears to catch walleye.
c.) they only fish for walleye at night.
d.) they said a limit on the number and size of Walleye a spearfisher can catch.
The Ojibwe protected walleye populations as D. They said a limit on the number and size of Walleye a spearfisher can catch.
Wisconsin Walleye War was a series of protests regarding the fishing and hunting rights of the Ojibwes. Wisconsin wanted to regulate the rights of the people whenever they went fishing and hunting.
The protest eventually led to the state speaking to the people. This resulted in a resolution that there should be a limit on the number and size of Walleye a spearfisher can catch.
This was necessary in order to preserve the walleye for future generations.
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I NEED THIS ASAP PLEASE
Answer:
wash or dry cleanmeasuring tapeupper arm girthtapeheightmeasuring tapebistlinewaistlineabdomenhip or seatExplanation:
please mark brainiest
Why is mass not included in the calculated height equation ?
Answer:
You can't use energy conservation when mass is removed. This has required energy that you are not taking into account.
Answer:
because some time it dose not need to be i equation becasue it is not need
Explanation:
OMG LOOK AT THIS! YOU WON'T BELIEVE IT!!!!!!!!!!!!
what would happen to the weather if half of the human race died off? would it get colder? why?
it would get healthier considering the stuff we put into the air and weather
And the decaying bodies from the virus you talked about would decompose and go into the soil creating natural fertilizer which means better plans moer air better weather
A crane lifts 1800kg mass through a vertical height of 6cm in 9 seconds, Taking (g) as 10N/kg. what is the cranes power output?
Explanation:
power output=(1800×10×0.06)/9=120watts
giải giúp em bài này với ạ?
vdjs vs jsbdjskshskjsjdjfodjshsvsjsbdbdn
how can you increase the sensitivity of a Mercury thermometer?
The sensitivity of a mercury thermometer can be increased by using a smaller mercury bulb, thinner wall and smaller bore. A smaller bulb contains less mercury and hence absorbs heat in shorter time. As a result it can response faster to temperature change.
Which of the following is a product in the process of photosynthesis?
O Nitrogen
O Water
O Glucose
O Sunlight
Answer:
glucose is the product in the process of photosynthesissomeone pls helpp meeee
Answer:
the first answer is correct
Submit a hand-drawn picture by you of the following.
"Humpty Dumpty sat on a wall, Humpty Dumpty had a great fall, and all the king's horses and all the king's
men couldn't put Humpty Dumpty back together again."
Please help, thanks.
pleease help me please!!!
Answer:
4 filter funnel 7 round bottom flask sorry but that is all I know
How does the appearance of spiral galaxies vary? *Select the two correct answers.*
A. They vary in how tightly their arms are wound.
B. They vary in the brightness of stars located on their arms.
C. Some are more elongated in shape than others.
D. Some have a band of stars and materials through their middle, but others do not
Answer:
A. And D.
A. They vary in how tightly their arms are wound.
D. Some have a band of stars and materials through their middle, but others do not.
The appearance of spiral galaxies vary in the following ways:
A. They vary in how tightly their arms are wound.
D. Some have a band of stars and materials through their middle, but others do not
Spiral galaxies are the galaxies where the gas clouds and the stars are concentrated in spiral arms.
Examples of spiral galaxies include Milky way, Sunflower Galaxy, Andromeda Galaxy, etc.
It should be noted that spiral galaxies vary in how tightly their arms are wound while some have a band of stars and materials through their middle, but others do not.
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For question 51, do you use a=d/t
No. That won't help. It's not even true.