The mass of the platinum if the volume is 113 cm³ and density is 21.4 g / cm³ is 2.418 kilograms or 2 kilograms and 418 grams.
The density is the mass of a material substance per unit volume. d = M/V, where d is density, M is mass, and V is volume, is the formula for density. Grams per cubic centimeter are a typical unit of measurement for density.
As an illustration, the density of Earth is 5.51 grams per cubic centimeter, whereas the density of water is 1 gram per cubic centimeter.
Given:
The volume of the platinum disk, V = 113 cm³,
The density of platinum, d = 21.4 g / cm³
Calculate the mass using density and mass relation as shown below,
density = Mass of the platinum / Volume of the platinum
21.4 = Mass of the platinum / 113
Mass of the platinum = 21.4 × 113
Mass of the platinum = 2418.2 g
As we know 1 kg = 1000 grams,
Mass of the platinum = 2418.2 / 1000
Mass of the platinum = 2.418 kg
Thus, the mass of the platinum is 2.418 kg.
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gravity dwn, your hand up and equal to grav
When you hold a book at rest, two forces act upon it: the downward gravitational force exerted by the Earth represented as -14ĵ N and the upward force exerted by your hand that equals 14 N, balancing out the weight of the book. These forces cancel each other out, keeping the book at rest as per Newton's Second Law.
When you hold a book at rest in your hand, two primary forces are acting upon it. These are the gravitational force, which is the book's weight pulling it downwards, and the force exerted by your hand, pushing upwards against the book. The downward gravitational force is caused by the earth's mass attracting the book's mass. This force is represented as -14ĵ N in physics. The force exerted by your hand counters this gravitational pull, allowing the book to remain at rest in your hand.
By Newton's second law, since the book is at rest, the net force acting on the book is zero. Meaning, the gravitational force and the force exerted by your hand cancel each other out. This is represented as: FPH + FEH = 0, where FPH is the force exerted by your hand and FEH is the force exerted by the Earth. With proper calculation, the force exerted by your hand on the book equals 14 N in the upward direction, counteracting the book's weight.
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b. family.
c. Both A and B
Answer: option C
Explanation:
A DUI (driving while under the influence of alcohol or drugs) conviction means that a person has been found guilty, of either DUI or has been found guilty of driving with a 0.8% or more blood alcohol concentration. If a person is found guilty, the DUI conviction will remain on record of driving for 75 years. A DUI conviction not only affects the driver and his/her personal relationships. Conviction can also lead to imprisonment, which will also have a negative effect on family and friends.
Answer:
Reproducibility
Explanation:
The results of an experiment should be reproducible. By repeating the experiment several times, a confidence interval can be determined that will help establish that the results are real, and not an artefact
Convection is a process that helps distribute heat, notably in daily applications such as heating systems and cooking. It involves the movement of heat through fluids, where hotter parts become less dense and rise, creating a current.
Convection is a significant process in our daily lives that enables the transfer of heat in fluids (liquids and gases) from one place to another.
One common application of convection is seen in Heating Systems. For instance, in a radiator, hot water or steam travels through the system, heats the surrounding air, and this hot air rises, creating a convection current that distributes the warmth throughout a room.
Another prime example of convection at work is Cooking. When you boil water or cook in a pot, the heat from the stove heats up the pot which then heats the water at the bottom. This hot water rises, pushing the cooler water to the bottom where it too gets heated, thus creating a convection current.
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