PLEASE HELP!!!!!!!!!!!
Will it float? YES or NO
Ice = 0.92g/cm3
Wood = 0.45 g/cm3
A 3.0-kg block sits on top of a 5.0-kg block which is on a horizontal surface. The 5.0-kg block is pulled to the right with a force F⃗ as shown in the figure. The coefficient of static friction between all surfaces is 0.57 and the kinetic coefficient is 0.43. What is the minimum value of F needed to move the two blocks?
Final answer:
The minimum value of the force needed to move the two blocks is approximately 27.93 N.
Explanation:
To determine the minimum value of the force needed to move the two blocks, we need to consider the friction between the blocks and the surface. Since the coefficient of static friction is given, we can use it to find the maximum static friction force:
Fstatic_max = μstatic × N
where μstatic is the coefficient of static friction and N is the normal force. Since the 3.0-kg block is sitting on top of the 5.0-kg block, the normal force on the 5.0-kg block is equal to its weight:
N = m × g
where m is the mass of the 5.0-kg block and g is the acceleration due to gravity. Once the force F is greater than the maximum static friction force, the blocks will begin to move. The minimum value of F needed to move the two blocks is therefore equal to the maximum static friction force:
F = Fstatic_max
Substituting the given values, the equation becomes:
F = μstatic × (m × g)
Plugging in the values, we get:
F = 0.57 × (5.0 kg × 9.8 m/s²)
Simplifying, we find that the minimum value of F needed to move the two blocks is approximately 27.93 N.
The velocity of a wave is a function of its:
energy
form
medium
amplitude
Answer:
amplitude is the answer
HELP PLEASE ASAP!!!!
Which of the following terms describes how mountains form?
A: Gradually
B: Rapidly
C: Explosively
D: Destructively
our boss asks you compare two sound waves and determine which has the higher frequency. Wave A has a period of 4⁄100 second and Wave B has a perio of 1⁄7 second.
if you were in a canoe on a calm lake and you threw a heavy stone into the water in front of you what would the canoe do
A- the canoe would move backward a bit
B- the canoe would move forward a bit
C- the canoe would move forward and keep going
D- the canoe would not move because it is too heavy
Answer: Option A: The canoe would move backward a bit.
Explanation:
Newton's third law of motion states that for every action there is equal and opposite reaction. This means when you threw a heavy stone in front of you, you applied a force. Equal and opposite force acted on the canoe and it moved backward a bit.
Hence, according to Newton's third law of motion, when you throw a heavy stone forward, and equal amount of force will push the canoe backwards.
Final answer:
In a canoe, throwing a heavy stone into the water away from you will cause the canoe to move backward a bit due to Newton's Third Law of Motion. This motion is equal and opposite to the force applied when throwing the stone. The principles of forces help understand canoeing strategies, as well as the motion and sinking of objects in water.
Explanation:
When you are in a canoe on a calm lake and throw a heavy stone into the water, what you're experiencing is an application of Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction. So, if you throw the stone away from the canoe, the force of throwing the stone forward will produce a reactive force in the opposite direction, causing the canoe to move backward a bit, which corresponds with option A. This movement is temporary, and once the initial reactionary force dissipates, the canoe will stop moving backward unless other forces are at play.
Canoeing techniques also involve understanding the forces at play. When paddling a canoe upstream, staying near the shore is wise due to the slower water speeds caused by friction between the water and the riverbanks. Meanwhile, when canoeing downstream, it is often best to stay near the middle where the current is stronger and can assist in propelling you forward with less effort.
This understanding of forces also clarifies that the motion of objects, such as a stone thrown into water, can be influenced by factors like density and gravitational force, rather than only the force exerted by a throw. When a stone is placed in water, it sinks because the stone's density is greater than water's, leading to a gravitational force that exceeds the buoyant force on the object.
what is the difference between magnetism and a magnetic field
Magnetism is a force that can attract "pull toward" or repel "push away" some materials. Certain elements such as cobalt, iron, and nickel. are strongly attracted by a magnetic force and are called ferromagnetic.
A magnetic field is the area of space around a magnet where magnetism is detected. The poles are where the magnetic field is the strongest. The larger the magnet, the greater its magnetic field is.
What happens to the particles of the liquid inside a thermometer when the thermometer is heated?
They slow down and spread apart.
They speed up and spread apart.
They slow down and move closer together.
They speed up and move closer together.
Speed up and spread apart
What is chemical stimuli
Planets, stars, asteroids and other celestial bodies have generally round shapes. Some are ovals, others really bumpy circles, and some are a very squished oval. Why are none triangular or rectangular?
Tim observes that a force pulls him down when he jumps up in the air. Based on his observation, which conclusion is correct?
Gravitational force is a contact force.
Gravitational force helps objects float.
Gravitational force pushes an object up.
Gravitational force is a non-contact force.
Answer:
Gravitational force is a non-contact force.
Explanation:
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Which of the following make up the nucleus of an atom?
why does glass expands before water?
A small child gives a plastic frog a big push at the bottom of a slippery 2.0 meter long, 1.0 meter high ramp, starting it with a speed of 5.0 m/s. What is the frog's speed as it flies off the top of the ramp?
Which winds are affected by specific landforms on earth's surface?
A) Westerlies
B) Polar Easterilies
C) Trade Winds
D) Local Winds
If you have a mineral sample with a volume of 4 ml and a mass of 20 grams , what is the density ?
The density of a mineral sample with a volume of 4 ml and a mass of 20 grams is 5 grams per milliliter (g/ml).
If you have a mineral sample with a volume of 4 ml and a mass of 20 grams, the density can be calculated using the formula:
Density = Mass / Volume
Substituting the given values into the formula, we get:
Density = 20 grams / 4 ml = 5 grams per milliliter (g/ml).
What did early South American civilization do to promote farming
Dylan is the best athlete in our school. He plays football, basketball, and baseball and does the pole vault for the track team. He can vault up to five and seventy-three hundredths meters. If he would like to be able to pole vault up to six and twelve hundredths meters, how many more centimeters does he need to pole vault to reach his goal?
A boy flies a kite with the string at a 30 degree angle to the horizontal. The tension in the string is 4.5N .
How much work in J does the string do on the boy if the boy stands still?
How much work does the string do on the boy if the boy walks a horizontal distance of 11m away from the kite?
How much work does the string do on the boy if the boy walks a horizontal distance of 11m toward the kite
From our physics class, we know that Work is a product of Force and Displacement. The force must be the force in the same direction with the displacement. So force and displacement must be parallel.
A. How much work in J does the string do on the boy if the boy stands still?
Since we know that: Work = Force * Displacement
and in this case displacement is equal to zero, therefore Work must also be equal to zero.
Work = 0
B. How much work does the string do on the boy if the boy walks a horizontal distance of 11m away from the kite?
Now are given a displacement of 11 m which is a horizontal distance. Therefore we must first calculate the horizontal component of force:
Fx = 4.5 N * cos 30
Fx = 3.897 N
So work is:
Work = 3.897 N * 11 m
Work = 42.87 J ~ 43 J
The string does 49.5J of work on the boy when he stands still, -49.5J when he walks away from the kite, and 49.5J when he walks toward the kite.
Explanation:The work done by the tension in the string on the boy can be calculated using the formula:
Work = Force * Distance * cos(θ)
where θ is the angle between the force vector and the displacement vector. In this case, the tension force is acting horizontally, so the angle between the force and displacement vectors is 0 degrees.
Therefore, for the first scenario (boy standing still), the work done by the string is:Work = 4.5N * 11m * cos(0°)
Since cos(0°) = 1, the work done by the string is:Work = 4.5N * 11m * 1 = 49.5J
In the second scenario (boy walking away from the kite), the displacement vector is in the opposite direction of the tension force, so the angle between them is 180 degrees.
Therefore, the work done by the string is:Work = 4.5N * 11m * cos(180°)
Since cos(180°) = -1, the work done by the string is:Work = 4.5N * 11m * -1 = -49.5J
In the third scenario (boy walking toward the kite), the displacement vector is aligned with the tension force, so the angle between them is 0 degrees.
Therefore, the work done by the string is:Work = 4.5N * 11m * cos(0°)
Since cos(0°) = 1, the work done by the string is:Work = 4.5N * 11m * 1 = 49.5J
Learn more about Work done by tension in a string here:https://brainly.com/question/14003719
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the chart lists the masses of four balls that have the same momentum. Which correctly compares 2 of the balls
Answer:B : D
The correct answer would be B:The red ball has a greater velocity than the purple ball.
Hope this helped : )
Explanation:
Please help have no clue on this
What does the force of gravity on an object depend on?
A. the object's mass
B. compounds
C. molecules
D. charged particles
How would you calculate the spring constant of an unknown spring?
Final answer:
To find the spring constant, apply Hooke's Law using the formula F = kx, where F is force due to gravity (mg), and x is the stretch distance. For a 10.0 kg mass stretching the spring 8.00 cm, the spring constant is calculated as 1225 N/m.
Explanation:
To calculate the spring constant (k) of a spring, you can use Hooke's Law, which is F = kx, where F is the force applied to the spring, and x is the displacement of the spring from its equilibrium position. In the scenario where a spring stretches 8.00 cm (or 0.080 meters) for a 10.0 kg load, the force exerted by the load (F) can be found using the force due to gravity, which is F = mg. The mass (m) is 10.0 kg, and the acceleration due to gravity (g) is approximately 9.80 m/s². Thus, F = (10.0 kg) × (9.80 m/s²) = 98.0 newtons (N).
Now that we know F and x, we can solve for the spring constant (k):
k = F/x
k = 98.0 N / 0.080 m
The spring constant k is 1225 N/m.
all but one statement applies to electromagnetic radiation
Answer:
Its D can i get brainliest
Explanation:
What is meant by saying that a wave has a low frequency?
A. The wave is very tall
B. The wave is very long
C. Few wave peaks pass a point in one second
D. A large number of wave peaks pass a point in one second.
A new statue of the town founder is erected in the park. At the unveiling, the statue is a orange-brown copper. After a year, the statue looks blue-green. Has a physical or chemical change taken place?
Which of these is an example of a physical change? Question options: wood decaying iron melting paper burning steel rusting
Final answer:
Iron melting is an example of a physical change because it involves a state change without altering the substance's chemical composition.
Explanation:
An example of a physical change from the options provided is iron melting. Physical changes are characterized by a change in the state or properties of matter without altering its chemical composition. When iron melts, it changes from solid to liquid, but the substance remains iron; its molecules are not changed. Other examples of physical changes might include boiling water, dissolving sugar in water, or breaking a mirror. Conversely, wood decaying, paper burning, and steel rusting involve chemical reactions that create new substances, thus, they are chemical changes.
a track coach with a meter stick and a stopwatch is trying to determine if a student is walking with constant speed.he should...
This force on compass dials is an example of a force that _______.
A. needs electricity to act.
B. acts through particles in the air
C. acts only on contact.
D. acts at a distance.
acts at a distance
is the answer
Discuss potential behavioral concerns for people should they travel to Mars.
The Answer above is Correct :)