What common household substances can turn blue litmus paper red?
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Properties of acids include:
*Tasting sour
*Conduct electricity
*Corrosive
A few household acids would be lemons, vinegar, salt, and some sodas.
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Carlos runs with velocity \vec{v}v →= (5.6 m/s, 29o north of east) for 10 minutes. How far to the north of his starting position does Carlos end up? (Give your answer to the nearest meter)
Imagine that you’re observing a collision. Which action would allow you to determine whether the collision is inelastic?A. Measure the force of impact.B. Observe whether the colliding objects change their shape.C. Measure the acceleration of the colliding objects.D. Measure the mass of the colliding objects.
Question 1: Hypothesis and Data CollectionFill the balloon with water until it is the size of a golf ball, and tie a knot in the end. Make sure there are no air bubbles in the balloon. In the plastic container, mix the plaster of Paris powder with water until it is as thick as yogurt, and then press the balloon into the center. One-third of the balloon should be below the surface of the plaster. Set the container aside until the plaster sets. Part A In this experiment, you will place the container in the freezer. What do you think will happen?
Which of the following do waves carry?a) matter b) energy c) matter and energy d) the medium
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The sum of all forces applied to the object = (30) x (15)
= 450 newtons, in the direction of the acceleration.
F=a*m
a=
m=30kg
F=
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The correct answer to the question is that water will exert a force on the swimmer in forward direction, and swimmer will move along that direction.
EXPLANATION:
Before going to answer this question, first we have to understand Newton's third laws of motion.
Newton's third laws of motion states that, for every action, there is an equal and opposite reaction.
In the given question, the swimmer pushes the water in backward direction. This is the force of action. As per Newton's third law, the water must exert a reaction on the swimmer. The water applies a force on the swimmer in forward direction for which the swimmer can swim in the water.
b) The object has a charge opposite that of the field.
c) The object has a negative charge.
d) The object has a charge the same as that of the field.
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Answer:
option b
Explanation:
There is an object pulled inward in an electric field.
We have to find out of the four options given which is true.
a) The object has a neutral charge is false since when electric field pulls the object inward, there is a charge inside.
b) The object has a charge opposite that of the field, this option is correct since there will be an equal and opposite charge created by the object
c) The object has a negative charge will be correct only if the original charge was positive hence wrong
d) The object has a charge the same as that of the field is incorrect since this would be opposite the charge
So only option b is right
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The buoyant force on an object submerged in a fluid is equal to the density of the fluid it displaces.
According to Archimedes' principle, the magnitude of the buoyant force is equal to the weight of the fluid displaced by the object. The weight of the displaced fluid is directly proportional to the volume of the fluid displaced and the density of the fluid. So, the buoyant force (B) can be mathematically represented as:
B = ρ * V * g
Where:
ρ (rho) is the density of the fluid,
V is the volume of the fluid displaced by the object, and
g is the acceleration due to gravity.
The key point to remember is that the buoyant force acts in the opposite direction to gravity. If the object's weight is less than the buoyant force, it will float; if it is greater, it will sink.
To know more about Archimedes' principle here
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True apex...................
B) Mg2F2.
C) MgF.
D) MgF2.
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Answer is: D) MgF₂.
Magnesium fluoride is salt, ionic compound.
1) Magnesium (Mg) is metal from 2. group of Periodic table of elements and has low ionisation energy and electronegativity, which means it easily lose valence electons (two valence electrons).
Magnesium has atomic number 12, which means it has 12 protons and 12 electrons. It lost two electrons to form magnesium cation (Mg²⁺) with stable electron configuration like closest noble gas neon (Ne) with 10 electrons.
Electron configuration of magnesium ion: ₁₂Mg²⁺ 1s² 2s² 2p⁶.
2) Fluorine (F) is nonmetal with greatest electronegativity, which meand it easily gain electrons.
Fluorine jas atomic number 9, which means it has 9 protons and 9 electrons. It gain one electron to form fluorine anion (F⁻) with stable electron configuration like closest noble gas neon (Ne) with 10 electrons.
Electron configuration of fluorine ion: ₉F⁻ 1s² 2s² 2p⁶.
B. The force applied would be less, but the distance would be greater.
C. The force applied would be the same, but the distance would be shorter.
D. The force applied would be the same, but the distance would be greater.
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If the person inserted a nail with a hammer instead of the screw with the screwdriver, the force applied would be greater, but the distance would be shorter. The correct option is A.
What is force?
The action of push or pull in order to make a body change its state of motion or rest is called Force.
As the force is pressure per unit area. Force is inversely proportional to the area over which force is to applied.
The hammer would take more force to insert the nail. The screw has its helix which is to be inserted and application of force is small.
Thus, the force applied would be greater, but the distance would be shorter. The correct option is A.
Learn more about force.
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t if the person inserted a nail with a hammer instead of the screw with the screwdriver?