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zheka24 [161]
3 years ago
8

Mammals that depend on being able to run fast have slender lower legs with flesh and muscle concentrated high,? close to the bod

y. on the basis of rotational dynamics, explain why this distribution of mass is advantageous.
Physics
1 answer:
nexus9112 [7]3 years ago
8 0
<span>The longer and slimmer an animals legs are such as a horse, have larger amounts of muscle mass in their upper portion of leg such as the thigh and glute muscles.The glute being larger and the thigh gives the muscles more power distributed to the lower legs to propel large amounts energy to the limbs creating fast motion.</span>
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What are the characteristics of high energy waves?
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Amplitude and frequency
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On Earth, a kangaroo jumping will eventually return to ground due to the unbalanced force of gravity. What law does this illustr
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Newton’s law is the answer
6 0
3 years ago
a Car with a mass of 2000 kg is moving around a circular curve at a uniform velocity of 25 m/s the curve has a radius of 80 m wh
Viefleur [7K]
Well, first of all, the car is not moving at a uniform velocity, because,
on a curved path, its direction is constantly changing.  Its speed may
be constant, but its velocity isn't.

The centripetal force on a mass 'm' that keeps it on a circle with radius 'r' is

             F = (mass) · (speed)² / (radius).

For this particular car, the force is

                    (2,000 kg) · (25 m/s)² / (80 m)

                 = (2,000 kg) · (625 m²/s²) / (80 m)

                 = (2,000 · 625 / 80)  (kg · m / s²)

                 =              15,625  newtons .
5 0
4 years ago
A small ball with mass 2.50 kg is mounted on one end of a rod 0.750 m long and of negligible mass. The system rotates in a horiz
alina1380 [7]

Answer:

1.40625 kg-m^2

Explanation:

Supposing we have to calculate rotational moment of inertia

Given:

Mass of the ball m= 2.50 kg

Length of the rod, L= 0.78 m

The system rotates in a horizontal circle about the other end of the rod

The constant angular velocity of the system, ω= 5010 rev/min

The rotational inertia of system is equal to rotational inertia of the the ball about other end of the rod because the rod is mass-less

I_{sys}= mL^2= 2.50\times 0.75^2

=1.40625 kg-m^2

m= mass of the ball and L= length of the ball

3 0
4 years ago
How much work does the electric field do in moving a proton from a point with a potential of +155 v to a point where it is -65 v
Zigmanuir [339]
The work done by the electric field is equal to the loss of electric potential energy of the proton in moving from its initial location to its final location:
W=-\Delta U = -q \Delta V = -q (V_f -V_i)
where q=1.6 \cdot 10^{-19}C is the proton charge, V_f = -65 V and V_i=+155 V are the voltages in the final and initial locations. Substituting, we get
W=-(1.6 \cdot 10^{-19}C)(-65 V-(+155 V))=3.5 \cdot 10^{-17}J
7 0
4 years ago
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