Answer:
the maximum height reached by the object from where it was launched is 0.4591 m
Explanation:
initial speed of the object, u= 3 m/s
The velocity at the maximum height will always be 0.
Therefore, final velocity, v= 0 m/s
Using the Newton's equation of motion,
v^2 - u^2 = 2*g*h(max)
0 - u^2= 2*g*h(max)
h(max) = -u^2 /2* g
where g is the gravitational acceleration.
g= - 9.8 m/s^2
substituting the values in equation,
h(max)= - (3*3) / 2*(-9.8)
h(max) = 0.4591 m
the maximum height reached by the object from where it was launched is 0.4591 m
learn more about maximum height reached here:
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I formulate a hypothesis based on their observations about what occurs when both the rock and the wood are submerged in water.
<h3 /><h3>What is density?</h3>
Density is defined as the mass per unit volume. It is an important parameter in order to understand the fluid and its properties. Its unit is kg/m³.
The mass and density relation is given as
mass = density × volume
I study if the volume or density of items determines whether solid objects float or sink in water in this scientific inquiry I did the experiment of density, mass, and volume using a rock and a standard-shaped piece of wood.
It is critical that the chosen piece of wood is larger than the rock and that the rock be tiny enough to fit inside the measuring cylinder. I see both the rock and a chunk of wood.
Hence I formulate a hypothesis based on their observations about what occurs when both the rock and the wood are submerged in water.
To learn more about the density refers to the link;
brainly.com/question/952755
Answer:
3260.33 J
Explanation:
= number of rods = 5
= length of each rod = 0.715 m
= mass of rod = 2.51 kg
= total moment of inertia
Total moment of inertia is given as
= 2.14 kgm²
= angular speed = 527 rpm = 55.2 rad/s
Rotational kinetic energy is given as
E = (0.5) ( )²
E = (0.5) (2.14) (55.2)²
E = 3260.33 J
C , an example would be wind energy, you can always replenish energy that comes from air
Here, <span>1 g of ice at –5 °C to 1 g of water at 5 °C will require the most thermal energy 'cause it will require some extra energy (latent heat = 80 Cal/gm for this case) for changing the phase from 0 C ice to 0 C water.
In short, Your Answer would be Option B
Hope this helps!</span>