Imagine a pulley system with four fixed and four moveable pulleys. What would be the mechanical advantage of this system?
Answers
The perfect mechanical advantage is four rope segments. This indicates that the compound pulley increases the applied force by a factor of four. For instance, the pulley would exert 1600 Newtons of force on the load if 400 Newtons of force were given to it.
What is force ?
A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Mechanically speaking, a moving pulley has a 2 advantage. The force needed to move any object that is linked to a moving pulley will therefore be halved. This occurs as a result of the rope's fixed end in a moving pulley absorbing some of the force needed to move the object.
Thus, the pulley would exert 1600 Newtons of force on the load if 400 Newtons of force were given to it.
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a fixed pulley is a load multiplier and a movable multiplier is a speed multiplier
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if you were designing a pot to cook spaghetti in , which parts would you make from good conductors of heat ? which parts would you make from insulators ? explain your answer.
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What is the density of gold if you have 96.9 grams of gold and it takes up 5mL of space?
17.9 g/mL
103.199174 g/ml
50,000 g/ml
19.32 g/mL
PLS HELP AND IF YOU CAN PLEASE HELP ME ON MORE, thanks!
Answers
Answer:
The density of gold is 19. 38
Explanation:
Density is defined as the property that matter, whether solid, liquid or gas, has to compress in a given space. In other words, density is a quantity that allows you to measure the amount of mass in a given volume of a substance. So, the expression for the calculation of the density is the quotient between the mass of a body and the volume it occupies:
Density, according to the International System of Units, is usually expressed in kilogram per cubic meter (kg/m³) or gram per cubic centimeter (g/cm³). Although it can also be expressed in any other unit of mass by volume.
In this case:
- mass= 96.9 grams
- volume= 5 mL
Replacing:
density=19. 38
The density of gold is 19. 38 , that you could approximate the option 19. 32
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Answer:
Most astronomical objects, such as galaxies, stars, and planets
Explanation:
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Answer:
The symbiosis between mosquitoes and the microorganisms responsibles of disease is endosymbiosis.
Explanation:
Mosquitoes usually have different microorganism inside their digestive tract. When mosquitoes suck other animals blood, their transmit those microorganisms (frequently parasites) to the animal. In these cases mosquitoes are called vectors, organisms that have microorganisms (endosymbionts) inside but do not suffer any consequences, they only act as a house for the endosymbiont.
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Answer:
Net ionic equation:
Ca⁺²(aq) + CO²⁻₃(aq) → CaCO₃(s)
Explanation:
Chemical equation:
K₂CO₃ + CaCl₂ → KCl + CaCO₃
Balance chemical equation:
K₂CO₃(aq) + CaCl₂(aq) → 2KCl(aq) + CaCO₃(s)
Ionic equation:
2K⁺(aq) + CO²⁻₃(aq) + Ca⁺²(aq) + 2Cl⁻(aq) → 2K⁺(aq) + 2Cl⁻(aq) + CaCO₃(s)
Net ionic equation:
CO²⁻₃(aq) + Ca⁺²(aq) → CaCO₃(s)
The K⁺(aq) and Cl⁻ (aq) are spectator ions that's why these are not written in net ionic equation. The CaCO₃ can not be splitted into ions because it is present in solid form.
Spectator ions:
These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.
Final answer:
The net ionic equation for the reaction between K2CO3 and CaCl2 is Ca2+(aq) + CO3^2-(aq) --> CaCO3(s). This is obtained after removing the spectator ions (K+ and Cl-) from the full ionic equation.
Explanation:
The subject of discussion is the net ionic equation for the given chemical reaction between K2CO3(aq) and CaCl2(aq). An ionic equation represents the ions that are present in a chemical reaction, and a net ionic equation only shows the ions that actually participate in the reaction.
To form the net ionic equation, we first write the complete ionic equation. In this case, K2CO3(aq) breaks down into 2 K+(aq) + CO3^2-(aq), and CaCl2(aq) breaks down into Ca2+(aq) + 2 Cl-(aq). The products would be 2 K+(aq) + 2 Cl-(aq) + CaCO3(s).
The net ionic equation is then formed by canceling out the spectator ions (ions that do not participate in the reaction). Here, the spectator ions are K+ and Cl-. So, the net ionic equation is: Ca2+(aq) + CO3^2-(aq) --> CaCO3(s)
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B. that energy was created
C. that energy was transformed
D. that energy was destroyed
Answers
Answer: c
Explanation:energy cannot be made or destroyEd according to a law of energy
Answer:
The answer is C. that energy was transformed
Explanation:
Hope this helped!