Answer:
B.
Explanation:
I'm pretty sure the answer is B because animals at the top need a lot of energy, so to make up for loss of energy at the higher levels, those organisms at the top have to consume a lot more.
Density = (mass) / (volume) <== MEMORIZE THIS !
1). Mass = 50 g. Volume = 100 cm³. Density = (mass) / (volume)
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2). Volume = (length) ·(width) ·(height) = (4cm) ·(4cm) ·(4cm) = 64 cm³
Mass = 672 g. Density = (mass) / (volume)
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3). Volume = (length) ·(width) ·(height)
Length = 1 meter = 100 cm
Width = 10 cm = 10 cm
Height = 22 mm = 2.2 cm
Volume = (100 cm) (10 cm) (2.2 cm) = 2,200 cm³
Mass = 42,460 g
Density = (mass) / (volume)
Answer:
D) 50%
Explanation:
According to conservation of momentum:

Assuming that the second taffy started at rest, both pieces have the same mass and that they combined after the collision, their final velocity is:

The initial kinetic energy of the system is:

Since the second taffy was not moving, it had no kinetic energy at first.
The initial kinetic energy of the system is:

The percentage of kinetic energy that becomes heat is given by:

THerefore, 50% of the kinetic energy becomes heat
Answer:

Explanation:
given,
angular speed, ω = 3.90 x 10¹² rad/s
bond length, L = 1.10 Å
molar mass = 28.0 g/mole
Rotational Kinetic energy

now,
moment of inertia ,
......(1)
mass of O₂ = m
mass of O = M = m/2
now, mass

form equation(1)


I = 9.66 x 10⁻⁴⁷ kg.m²
putting value in Rotational kinetic energy equation


Hence, rotational kinetic energy of the molecule is equal to 