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2 years ago

Which best describes the electric field created by a positive charge?

Physics

1 answer:

Vikentia [17]2 years ago

8 0

Answer:

Which best describes the electric field created by a positive charge? ... Its rays point toward the charge.

Explanation:

thank me later

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Driving on asphalt roads entails very little rolling resistance, so most of the energy of the engine goes to overcoming air resi

trapecia [35]

Answer:

a) $F_p=882N$

b) $P=4410W$

c) $V_p'=24135$ , $n=15.2\%$

Explanation:

From the question we are told that:

Mass $M=1500kg$

Velocity $v=4.9m/s$

Coefficient of Rolling Friction $\mu=0.06$

Generally the equation for The Propulsion Force is mathematically given by

$F_p=\mu*mg$

$F_p=0.06*1500*9.81$

$F_p=882N$

Therefore Power Required at

$V_p=5.0m/s$

$P=F_p*V_p$

$P=882*5$

$P=4410W$

$V_p' =15mpg$

$V_p'=15*\frac{1609}$

$V_p'=24135$

Generally the equation for Work-done is mathematically given by

$W=F_p*V_p'$

$W=882*15*1609$

$W=2.13*10^7$

Therefore

Efficiency

$n=\frac{W}{E}*100\%$

Since

Energy in one gallon of gas is

$E=1.4*10^8J$

Therefore

$n=\frac{2.1*10^7}{1.4*10^8}*100\%$

$n=15.2\%$

7 0

3 years ago

Click all that are examples of Kinetic Energy

irinina [24]

Answer: Salt and A moving baseball

Explanation: Just got 100 on the quiz.

4 0

2 years ago

A man drags a 71-kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the crate. The

Flura [38]

Answer:

T = 540 N (to two significant digits)

Explanation:

Let the crate dimension L be from strap attachment to floor contact

Let T be the strap tension

sum moments about the floor contact point to zero

mg[½Lcos25] - Tsin61[Lcos25] + Tcos61[Lsin25] = 0

L is common to all terms, so divides out.

½(71)(9.8)cos25 = T(sin61cos25 - cos61sin25)

T = (71)(9.8)cos25 / (2(sin61cos25 - cos61sin25))

T = 536.428020...

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3 years ago

A stone tumbles into a mine shaft and strikes bottom after falling for 4.2 second how deep is the mine shaft

rjkz [21]

$4.2*9.8\\41.16$

41.16 meters

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3 years ago

two point charges of 3.4 μc and 6.6 μc are 0.20 m apart. what is the electrical potential energy of the system?

Daniel [21]

Explanation:

electrical potential = (6.6-3.4)/0.20

= 16 uc/m

8 0

2 years ago