Answer:
The maximum possible up-thrust on the boat is 11,995.2 N
Explanation:
According to Archimedes' principle, the thrust received by an object immersed a fluid is equal to the weight of the fluid displaced;
The given parameter of the boat in sea water are;
The volume of the boat = 1.2 m³
The density of seawater = 1020 kg/m³
Density = Mass/Volume
Therefore, Mass = Density × Volume
The maximum volume of water that the boat displaces = 1.2 m³
The mass of the water displaced by the boat = (Density of seawater) × (Volume of seawater displaced)
∴ The maximum possible mass of the water displaced by the boat = 1.2 m³ × 1020 kg/m³ = 1224 kg
The maximum possible mass of the water displaced by the boat, m = 1224 kg
Weight = Mass, m × g
Where;
g = The acceleration due to gravity = 9.8 m/s²
The up-thrust on the boat = The weight of the seawater displaced
∴ The maximum possible up-thrust on the boat = m × g = 1224 kg × 9.8 m/s² = 11,995.2 N
The maximum possible up-thrust on the boat = 11,995.2 N.
THE RIGHT ANSWER WILL RECEIVE A BRAINLESS AND POINTS AND THANKS!!!
THE RIGHT ANSWER WILL RECEIVE A BRAINLESS AND POINTS AND THANKS!!!
What is the fundamental frequency of a mandolin string that is 42.0 cm long when the speed of waves of the string is 329 m/s?
Answer:
391.67Hz
Explanation:
The fundamental frequency formula in string is expressed as;
Fo = V/2L
V is the velocity of the wave = 329m/s
L is the length of the string = 42cm = 0.42m
Substitute
Fo = 329/2(0.42)
Fo = 329/0.84
Fo = 391.67Hertz
Hence the fundamental frequency of a mandolin string is 391.67Hz
3. Bart ran 5000 meters from the cops and an average speed of 10 meters/second before he got
caught. How long did he run?
Answer:
8 minutes and 20 seconds
Explanation:
5000/10 to get the number of seconds, which is 500, then you convert 500 seconds to minutes and you get 8 minutes and 20 seconds
‼️‼️EMERGENCY ITS DUE SOON‼️‼️
A box weighing 2000N is sliding across a cement floor. The force pushing the box is 500N, and the coefficient of sliding friction between the box and the floor is 0.20. What is the acceleration of the box? 
Answer:
1.96m/s^2
Explanation:
According to Newtons second law;
F = ma
a = F/m
a = nR/m
a = nmg/m
a = ng
n is he coefficient of friction = 0.2
g = 9.8m/s^2
a = 0.2 * 9.8
a = 1.96m/s^2
Hence the acceleration of the box is 1.96m/s^2
Transforme: a) 2 km em m b) 1,5 m em mm c) 5,8 km em cm d) 0,4 m em mm e) 27 mm em cm f) 126 mm em m g) 12 m em km
Answer:
a) 2000 m
b) 1500 mm
c) 580000 cm
d) 400 mm
e) 2.7 cm
f ) 0.126 m
g) 0.012 km
Explanation:
Transform
a) 2km to m
1 km = 1000m
hence : 2 km = 2 * 1000 = 2000 m
b) 1.5m to mm
1 m = 1000 mm
hence: 1.5 m = 1.5 * 1000 = 1500 mm
C) 5.8 km to cm
1 km = 100000 cm
hence ;5.8 km = 5.8 * 100000 = 580000 cm
D) 0.4 m to mm
1 m = 1000 mm
hence; 0.4 m = 0.4 * 1000 = 400 mm
E) 27 mm to cm
1 mm = 0.1 cm
hence ; 27 mm = 27 * 0.1 = 2.7 cm
F) 126mm to m
1 mm = 0.001 m
hence ; 126 mm = 126 * 0.001 = 0.126 m
G) 12m to Km
1 m = 0.001 km
hence ; 12 m = 12 * 0.001 = 0.012 km
show all work. a bus travels 100km/hr. it takes 6 hours to get from seattle to portland. how far away are the two cities?
Answer:
There would be 600km
Explanation:
Question 3 of 10
Which planet has the largest gravitational force?
A. Mercury
B. Uranus
C. Jupiter
D. Saturn
SUBMIT
what is the average speed of the object at 8 seconds accelerate without speeding up
because i said so
the answer is 80 diveded by 8 equalzzzz
Need help ASAP! Thank you
Answer:
The answer is never
Explanation:
If 2 balanced forces are pushing on it then the speed will not change
Two students are running in a race. Student 1 has more kinetic energy than student 2. Who will win the race?
A dwarf planet is likely to
O A. have a bright tail and a glowing nucleus
O B. have chunks of rocks and that never clump together
O C. have a liquid hydrogen layer that surrounds a solid core
O D. have objects similar in mass orbiting nearby
Answer:
a have a bright tail and a glowing nucleus
A dwarf planet is most likely to have a bright tail and a glowing nucleus. Thus, the correct option is A.
What is a dwarf planet?A dwarf planet is a small planetary-mass object which is in direct orbit that of the Sun, it is smaller than any of the eight classical planets however it is still a world in its own right.
The prototypical dwarf planet is Pluto. The dwarf planets is that the geologically active bodies, which is an expectation that was borne out in 2015 by the Dawn mission to Ceres and the New Horizons mission to Pluto.
Dwarf planets always being in orbit around the Sun. They are not being a satellite of a planet. They having a mostly round shape due to its own gravity. They also have not cleared its neighboring region of debris.
Therefore, the correct option is A.
Learn more about Dwarf planet here:
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Which is a benefit of strength training? O Decreased blood flow to muscles O Improved oxygen delivery Flexibility of tendons and joints O Increased lean muscle tissue
Answer:
Increased lean muscle tissue.
Explanation:
I hope this helps :) Tell me if I am wrong!
Answer:
Increased lean muscle tissue.
Explanation:
i took the test!
Esteban pulls a 62 kg sled trough the snow. On the back of the sled is his 50 kg sack of fishing equipment. The between the sled and the snow is 0.07 and the between the sled and the sack is 0.1. While pulling, the fishing rod sticking out of his sack catches a tree branch, but Esteban doesn't notice and keeps walking. What force does Esteban need to exert to keep the sled moving with a constant velocity while the sack is pulled back across it?
Answer:
F = 144 N
Explanation:
For this exercise we will use Neqwton's second law. Let's fix a reference system with the x-axis in the direction of the sled, let's write the forces for each part
Sack, let's use subscript 1
Y axis
N₁-W₁ = 0
N₁ + W₁ = m₁ g
X axis
fr₁ = m a₁
the expression for the friction force is
fr = μ₁ N₁
we substitute
μ₁ m₁ g = m a₁
Sled, subscript 2
Y axis
N₂ - W₁ -W₂ = 0
N₂ = W₁ + W₂
N₂ = (m₁ + m₂) g
X axis
F - fr₁ -fr₂ = m a₂
the expression for the deroce force is
fr = μ N
we substitute
F - μ₁ m₁g - μ₂ (m₁ + m₂) g = m a₂
as it indicates that the velocity is constant the acceleration of the sled is zero (a₂ = 0)
F = μ₁ m₁g + μ₂ (m₁ + m₂) g
F = g (m₁ (μ₁ + μ₂) + μ₂ m₂)
let's calculate
F = 9.8 (50 (0.07 + 0.1) + 62 0.1)
F = 144 N
A bowling ball is rolling at a velocity of 56 km/h with a momentum of 130 kg-m/s. What is its
mass?
+
Answer:
Explanation:
Momentum
Two trains are traveling between city A and city B a distance of 4000 kilometers (km). The regular train travels at a speed of 80 kilometers per hour (km/h). The express train leaves at the same time on a parallel track and travels at 100 km/h. The formula for speed (S) is S=DT where S is speed, D is distance and T is time. How much earlier will the express train arrive at city B? * 10 points
Answer:
10 hours earlier than regular train
Explanation:
In this case you are already giving the expression to be used which is:
S = D/t (1)
The problem is giving us the data of the speed of both trains, and we also know the distance between City A and B, which is 4000 km, therefore, we just need to solve for t in the above expression for both trains, and then, do the difference between their times and see how much earlier the express train arrives.
Solving for t, we have:
t = D/S (2)
For Train 1 (The regular):
t₁ = 4000 / 80
t₁ = 50 h
For Train 2 (Express):
t₂ = 4000 / 100
t₂ = 40 h
Now, as expected express train arrives earlier, now let's see how much:
T = t₁ - t₂
T = 50 - 40
T = 10 hTherefore, Express train arrives 10 hours earlier than regular train.
Hope this helps
A wave has a wavelength of 0.02m and period of 8.0*10^-2 seconds. calculate it's speed. (showing working)
Answer:
[tex]v = 0.25m/s[/tex]
Explanation:
Given
[tex]\lambda = 0.02m[/tex] --- Wavelength
[tex]T = 8.0 * 10^{-2}s[/tex] --- Period
Required
Determine the velocity of the wave
This is calculated using:
[tex]v = \frac{\lambda}{T}[/tex]
[tex]v = \frac{0.02m}{8.0*10^{-2}s}[/tex]
[tex]v = \frac{0.02m}{8.0*0.01s}[/tex]
[tex]v = \frac{0.02m}{0.08s}[/tex]
[tex]v = 0.25m/s[/tex]
Hence, the velocity is 0.25m/s
Can someone please help me?
Please also explain how you got the net force, thank you.
The questions are in the picture i attached below.
Answer:
unbalanced 1st answer
right 2nd answerAnswer:
hi, your answers are correct
Explanation:
what is linear magnification
Answer:
Linear magnification refers to the ratio of image length to object length measured in planes that are perpendicular to the optical axis. A negative value of linear magnification denotes an inverted image.
Explanation:
Answer:
i hope it help
Explanation:
stay happy and safe
________ 8. The pH of a solution is a measure of the concentration of H+ ions in it. TRUE OR FALSE
Answer:
False.
Explanation:
Potential of Hydrogen is the full form of PH.
Potential of Hydrogen tells about the acidity or basicity of the solution.
The pH of a solution is a measure of the concentration of hydrogen ions [tex](H+)[/tex] ions and hydroxide ions [tex](OH-)[/tex] in a solution.
So, the given statement is false.
True or false, the hardest working muscle in the body is the gluteus Maximus?
Answer:heart
The hardest working muscle is the heart. It pumps out 2 ounces (71 grams) of blood at every heartbeat. Daily the heart pumps at least 2,500 gallons (9,450 liters) of blood. The heart has the ability to beat over 3 billion times in a person's life.
Explanation:hope this helps
a horizontal applied force of magnitude 25 N acts on a block sliding on a horizontal surface. The force of friction between the block and the surface has magnitude 8 N. If the direction of the applied force is reversed which of the following is true?
A. the magnitude of the velocity of the block will remain constant.
B. the magnitude of the acceleration of the block decreases
C. The magnitude of the net force on the block increases as compared to before.
D. the magnitude of the net force on the block will remain the same as before
' A ' and ' D ' are both correct statements.
A sixth grader moves down the hall at 1.2 m/s. When he sees a bunch of eighth graders coming, he
begins to run. After 3.2 s, he is moving at 3,6 m/s. What is his acceleration?
Answer:
0.75m/s^2
Explanation:
3.6-1.2=2.4 m/s (Change in velocity)
2.4/3.2=0.75 m/s/s or m/s^2
What are the energy transformations for a battery-powered radio?
Answer:
hope that helps
Explanation:
sound energy to chemical energy.
electrical energy to sound energy.
sound energy to electrical energy.
plz help will mark the brainliest
Answer:
yesssssssssssssssssssssssssssssssssssss
Distinguish between
Subsistence farming and Intensive farming
Answer:
Subsistence farming is growing food for your own and your family's direct consumption. Like a backyard vegetable garden, but with fruit, starch crops, and animals as well. Intensive agriculture is anything that really works the land hard. The inputs cost money, so it is generally only done for profit
hope it becomes helpful to you ☺️☺️
good luck
Please Help! WILL GIVE BRAINLIEST IF ANSEWR IS CORRECT!!!
(See picture for question.)
Gravity increases when mass increases and distance decreases. Gravity decreases when mass decreases and distance increases.
Answer:
graity decreses the further you get from earth so ifmas decreses gravity will be les if mas increses it will de mor efective and it distence increses gravity will decrease if distence decreses gravity will increase
Explanation:
what is electrical energy ?
Explanation:
Electrical energy is energy derived from electric potential energy or kinetic energy. When used loosely, electrical energy refers to energy that has been converted from electric potential energy.
HOPE THIS HELPS YOU
Answer:
Hi!
Explanation:
Its kinetec energy moving by electric charges.
Does mass resists acceleration?
Assignment
1. Write a conclusion which can be deduced from each pair of statements.
a) Leona lives in 100 Mile House. 100 Mile House is in British Columbia.
B.Joan is taller than Stefan. Stefan is taller than Patrick.
c) The sides of a rhombus are equal. PQRS is a rhombus.
d) Prime numbers have two factors. 13 is a prime number.
Answer:
1.100 Mile House is a town and district municipality located in the South Cariboo region of central British Columbia.
2.Joan is taller than Stefan. Stefan is taller than Patrick. Joan is taller than Patrick
3.the sides of rhombus are equal.
4.A prime number has exactly two factors, 1 and itself. For example, 13 is a prime number because the only factors of 13 are 1 and 13.
How long would it take for a car to travel 22km if it has an average speed of 55 km/hr
Distance = (speed) x (time)
Time = (distance) / (speed)
Time = (22 km) / (55 km/hr)
Time = (22/55) (hr)
Time = 0.4 hour (that's 24 minutes)
A 40N force is applied to a spring constant of 100 N/m how far can this spring be compressed by the force
Answer:
Extension, e = 0.4 meters
Explanation:
Given the following data;
Force = 40N
Spring constant, k = 100N/m
To find the extension;
Force = spring constant * extension
Substituting into the equation, we have
40 = 100 * extension
Extension, e = 40/100
Extension, e = 0.4 meters
Therefore, the spring can be compressed by the force over a distance of 0.4 meters.