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solniwko [45]
3 years ago
9

two womans are of the same weight. one wears sandals with pointed heels while the other wears sandals with flat sole s. which on

would feel more comfortable while walking on a sandy beach? give reasons to support your answer​
Physics
1 answer:
BlackZzzverrR [31]3 years ago
7 0

Answer:

flat sole

Explanation:

the pointed heels will sink in the sand whereas the flat sole will not.

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The temperature is colder, and the water pressure is higher.

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3 years ago
What is the kinetic energy of a 120-cm thin uniform rod with a mass of 450 g that is rotating about its center at 3.60 rad/s?
goldfiish [28.3K]

Answer:

1.05 J.

Explanation:

Kinetic Energy: This is the energy possessed by a body due to its motion. The S.I unit of kinetic energy is Joules (J). The formula of kinetic energy is given as

Ek = 1/2mv²................. Equation 1

Where Ek = kinetic energy, m = mass of the uniform rod, v = liner velocity of the rod.

But,

v = αr .......................... Equation 2

Where α = angular velocity of the rod, r = radius of the circle.

Given: α = 3.6 red/s, r = 120/2 = 60 cm = 0.6 m.

Substitute into equation 2

v = 3.6(0.6)

v = 2.16 m/s.

Also given: m = 450 g = 0.45 kg.

Substitute into equation 1

Ek = 1/2(0.45)(2.16²)

Ek = 1.05 J.

4 0
3 years ago
Alright eksqijakojqnlqozjzbw.wlisj
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Explanation:

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an object tied to the end of the string moves in a circle . the force exerted by the string depends on the mass of the object it
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Which of the given will facilitate a normal Diels–Alder reaction?
babymother [125]

Answer:

D

Explanation:

-  The rate of the Diels-Alder is orders of magnitude faster if there is an electron-withdrawing group on the dienophile. For example, replacing a hydrogen on ethene with the electron-withdrawing group CN results in about a 10^5 increase in the reaction rate.

- Other common electron withdrawing functional groups that will accelerate the Diels Alder reaction of dienophiles include aldehydes, ketones, and esters.

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7 0
3 years ago
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