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SCORPION-xisa [38]
3 years ago
8

In which of the following situations would it NOT be wise to estimate?

Physics
1 answer:
ipn [44]3 years ago
5 0
Medicine to a patient. That should be calculated based on weight, strength/dosage and possibly other factors
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URGENTTT PLEASE HELP
mel-nik [20]
This doesn’t make any sense
3 0
2 years ago
A 60kg man jumps off a 30 foot building. Assuming he falls from rest and there is negligible air resistance, how long will it ta
Dmitriy789 [7]

Answer:

1.37 seconds before.... splat !

Explanation:

y = y0 + v0 t + 1/2 a t^2      y0 = 30       y = 0

                    v0 = 0 ( from rest)

                            a = - 32.2 ft/s^2

0 = 30 - 1/2 * 32.2 * t^2

t=1.366 seconds                   <u>  Note that   mass   is irrelevant.</u>

5 0
1 year ago
15 POINTS !!!
nirvana33 [79]

#1

As per work energy theorem work done by all forces must be equal to change in its kinetic energy

so correct answer will be

W_{net} = change in kinetic energy


#2

Torque is defined as

\tau = r \times F

\tau = rFsin\theta

so here torque will be maximum when applied force is perpendicular to the rod

so first figure of rod is correct for maximum torque


#3

When car makes turn then its passengers moves outwards which is due to the property of inertia because due to this property passengers has tendency to move in same direction and hence it feels to move outwards

So correct answer will be

<em>inertia</em>


#4

As per energy conservation we can say

initial potential energy = final kinetic energy

PE = KE

KE = mgH

KE = 0.5(9.8)(0.5)

KE = 2.5 J

7 0
3 years ago
A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. If radar waves h
brilliants [131]

Answer:

t=0.50cm

Explanation:

From the question we are told that:

Wavelength \lamda=3cm

Refraction Index n=1.50

Generally the equation for Destructive interference for Normal incidence is mathematically given by

2nt=m(\frac{1}{2})\lambda

Since  Minimum Thickness occurs at

At m=0

Therefore

t=\frac{\lambda}{2}

t=\frac{3}{4(1.50)}

t=0.50cm

6 0
3 years ago
Which statement is true?
hodyreva [135]

Answer:

Every magnesium (Mg) atom has atomic number of 12.

Explanation:

Magnesium (Mg) is a chemical element of great importance for plants, animals, and humans.

Alkaline earth metal, magnesium is obtained by electrolysis of magnesium chloride solution.

Magnesium burns with a shining flame. Magnesium is a good reducing agent. This property is used to obtain some other metals.

8 0
3 years ago
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