In the Freebody diagram the magnitude of the normal force is 40 N, the friction force is 25N, the net force is 80N. what is the magnitude of the applied force?
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.
Plzz help mee guys I need the ans
Answer:
the answer is c
Explanation:
copper and silver are the only 2 conductors listed.
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.
Read more: https://brainly.com/question/14708169
pleease help me please!!!
Answer:
4 filter funnel 7 round bottom flask sorry but that is all I know
someone pls helpp meeee
Answer:
the first answer is correct
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
Which landform is the farthest north?
When developing an experimental design, which action could a scientist take to improve the quality of the result?
Answer: You can Identify any biases about the answer to the scientific question.
Explanation:
Which of the following is the best hypothesis
Answer:
Melting and frezzing are physical changes
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 photosynthesiscan someone help with this plss
Answer:
push,weight,friction
Explanation:
Bcs it has 3
A physics teacher walks 4 meters East, 2 meters South, 4 meters West, and finally 2 meters North. What is the distance and displacement of this teacher?
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.
What is the pulling force of this train, if its engine provides 4200 kW power and 90 km/h speed?
Answer:
yes by 30
Explanation:
uhnhuh
Two rowboats on a lake are lined up, in contact, front to back in the same direction. A passenger in the rear boat pushes the front boat directly forward with a force of 40 N.
How much force does the front boat exert on the rear boat?
A. 0N
B. 20N
C. 40N
D. 80N
The answer is C. 40N.
Please help meeeee!!!
Answer:
1. Test tube
2. tongs
3.
4. FUNNEL
5.
6.
7. Flask
8. Beaker
9. Bunsen burner
10. Erlenmeyer Flask
11. Molar and pestle
12. Wire gauze
13. Graduated cylinder
14. Test tube rack
15. Pipet
16. Filo
Explanation:
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
Learn more on Forces here: https://brainly.com/question/13707444
A man walks westward on a ship with a speed of 4 km/hr. The ship's propeller drives it 15 km/hr south. What is the actual speed of the man relative to the earth? What is the direction of his velocity?
The actual speed or velocity of the man relative to the earth is 15.52km/hr.
The direction of the man's velocity relation to earth is 75° South of West.
Given the data in the question;
Velocity of man relative to ship; [tex]v_{mrs} = 4 km/hr[/tex] westVelocity of ship; [tex]v_s = 15 km/hr[/tex] southVelocity of the man relative to the earth; [tex]v_E =\ ?[/tex]Direction of the man's velocity; [tex]\theta = \ ?[/tex]To get the velocity of the man relative to the earth. From Pythagorean theorem
We can simply say
[tex]v_E = \sqrt{(v_{mrs})^2 + (v_s)^2}[/tex]
We substitute in our given values
[tex]v_E = \sqrt{(4km/hr)^2 + (15km/hr)^2}\\\\v_E = \sqrt{(16km^2/hr^2) + (225km^2/hr^2})\\\\v_E = \sqrt{241km^2/hr^2}\\\\v_E = 15.52 km/hr[/tex]
Therefore, the actual speed or velocity of the man relative to the earth is 15.52km/hr
To get the direction of the man's speed. From the three main trigonometric ratios: SOH CAH TOA
[tex]tan\theta = \frac{opposite}{adjacent}[/tex]
[tex]tan\theta = \frac{v_s}{v_{mrs}}[/tex]
We substitute in our values;
[tex]tan\theta = \frac{15km/hr}{4km/hr}\\\\tan\theta = 3.75\\\\\theta = tan^{-1}( 3.75)\\\\\theta = 75^o[/tex]
Therefore, the direction of the man's velocity relation to earth is 75° South of West
Learn more; https://brainly.com/question/5046811
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
By the time children are five years old:
A. the typical 90-minute sleep cycles of alternating REM and NREM are established.
B. about 50 percent of sleep time is spent in REM sleep and 50 percent is spent in quiet sleep that is very similar to NREM stages 1 and 2.
C. their sleep pattern is characterized by 60-minute sleep cycles, producing up to 13 cycles per day.
D. they will begin to experience their first dreams and nightmares.
Option D is correct. Around the age of five, children begin to experience their first dreams and nightmares
By the time children are five years old, several developments occur in their sleep patterns.
Option A is incorrect because the typical 90-minute sleep cycles of alternating REM (Rapid Eye Movement) and NREM (Non-Rapid Eye Movement) are not yet established at this age.
Option B is also incorrect as the sleep time distribution between REM sleep and quiet sleep (similar to NREM stages 1 and 2) is not necessarily equal at this stage.
Option C is inaccurate because 60-minute sleep cycles producing up to 13 cycles per day do not align with the typical sleep patterns of five-year-olds.
However, option D is correct. Around the age of five, children begin to experience their first dreams and nightmares.
This is an important milestone in their cognitive and emotional development, as it reflects the maturation of the brain regions involved in dreaming and the processing of emotions during sleep.
For more such questions on nightmares
https://brainly.com/question/14449788
#SPJ8
The neurotransmitter acetylcholine:
A. is chemically identical to heroin.
B. is found in all sensory neurons.
C. can cause hallucinations when present in abnormally excessive amounts.
D. is involved in muscle contractions and memory.
Explanation:
A. is chemically identical to heroin.
Peering through a telescope could be considered Step 1 of the scientific method.
True
False
How does the current in a resistor change if the voltage across the resistor is
increased by a factor of 2?
If the voltage across a resistor is increased by a factor of two, the current in the resistor doubles.
What is ohm’s law?When all physical parameters and temperature are constant, Ohm's law claims that the voltage across a conductor is directly proportional to the current flowing through it.
This current-voltage connection may be expressed mathematically as,
The Equation of Ohm's Law;
V∝I
V'∝I'
Hence, if the voltage across a resistor is increased by a factor of two, the current in the resistor doubles.
To learn more the ohm's law refer to the link;
https://brainly.com/question/796939
#SPJ1
physical science 5.03b worksheet
6. A 0.10-kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird’s kinetic energy?
Answer:what is the problems
Explana:
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.
Read related link on:
https://brainly.com/question/24940642
For question 51, do you use a=d/t
No. That won't help. It's not even true.
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.
Read related link on:
https://brainly.com/question/20785889
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•◍)
How many significant figures are in the following measurements? a. 3000000000 m/sA bike rider accelerates uniformaly at 2.0m/s^2 in 7.0 s. What was the speed of the object after 2.0 seconds?
Answer: 1 sig fig
Explanation: because 0s aren‘t significant and yes decimal points matter but after the decimal it’s a 0. So it is 1. If it was 0.30 it would be 2 sig figs but 0.03 would be one sig fig.
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