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Leno4ka [110]
2 years ago
13

A cement block accidentally falls from rest from the ledge of a 52.9-m-high building. When the block is 19.2 m above the ground,

a man, 2.00 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have to get out of the way
Physics
1 answer:
sesenic [268]2 years ago
7 0

Answer: V^2 = Vo^2 + 2g*dV^2 = 0 + 19.6(51.5-12.9) = 756.56V = 27.5 m/s.d = Vo*t + 0.5g.t^2 = 12.9-1.6 = 11.3 md = 27.5*t + 4.9t^2 = 11.34.9t^2 + 27.5t - 11.3 = 0Use Quadratic Formula and get:t = 0.385 s.

Explanation:

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Answer:

c

Explanation:

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Two resistors A and B are arranged in series in one branch of a parallel arrangement. The other branch contains a single resisto
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Answer:

Explanation:

A and B are in series , Total resistance = Ra + Rb

This resistance is in parallel with single resistor C

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Now this combination is in series in single resistance D .

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= Rd + { Rc x ( Ra + Rb ) / [Rc + ( Ra + Rb )] }

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A gas always spreads out to fill all available space.<br> True or False <br> Science Hw
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Explanation:

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3 years ago
Read 2 more answers
The power dissipated in a resistor can be written as __________.
Simora [160]

Answer:

P=I^2R

Explanation:

The power dissipated in a resistor is given by the equation:

P=I^2 R

where

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I is the current

R is the resistance

We can also rewrite the equation by using Ohm's law:

V=IR

where V is the potential difference across the resistor. Rewriting R as

R=\frac{V}{I}

The equation for the power becomes

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3 0
3 years ago
A thermosensory neuron in the skin converts heat energy to nerve impulses via a conversion called
Sav [38]

Answer:

Sensory transduction

Explanation:

The term sensory transduction refers to the conversion process where the sensory energy is converted in order to change the potential of a membrane.

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Transduction takes in all of the five receptors of the body. Thus skin is also one of the receptors and hence conversion of heat energy into impulses takes place with the help of thermo-sensory neuron.

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3 years ago
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