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solniwko [45]
3 years ago
5

two campers pull a canoe. If the force of friction acting on the canoe is 84 N, then how much work does the two campers need to

do to keep the canoe in the middle of the river for a displacement of 50 m?
Physics
1 answer:
sladkih [1.3K]3 years ago
8 0
W=Fs 
just multiply them all
84*50 = 4200 J
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Tanzania [10]

Answer:gravity

Explanation:

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3 years ago
1. Determina el momento que produce una fuerza de 7 N tangente a una rueda de un metro de diámetro, sabiendo que el punto de apl
Rudik [331]

Answer:

τ= F r     into the blade

Explanation:

The moment of a force is defined by

         τ = F x r

where the bold indicates vectors

Let us write in the expression in magnitude

         τ = F r sin θ

in our case the force is tangent to the wheel therefore the angle between F and the radius is 90º, and the sin 90 = 1

       τ= F r

The direction of τ can be used by the rule of the right hand, the fingers curve in the direction of the torque when advancing from the force to the radius and the thumb points in the direction of the torque.

In this case, for a clockwise rotation, the fingers are curved in the direction and the thumb points into the blade, this is the direction of the τ.

TRASLATE

El momento de una fura es definido por

         τ = F x r

donde la negrillas indican vectores

Escribamos en ta expresión en magnitud

          τ = F r sin θ

en nuestro caso la fuerza es tangente a la rueda por lo tanto el angulo entre F y el radios es 90º, y el sin 90=1

        τ = F r

la dirección de tau la podemos  usar la regla de la mano derecha, los dedos curva en la dirección del torque al avanzar dese la fuerza al radio y el pulgar apunta en la dirección del torque.

En este caso para un giro en sentido horario los dedos se curvan ente sentido y el pulgar apunta hacia dentro de lla hoja, esta es la dirección del troque

5 0
4 years ago
Using a simple machine, a student is able to lift a 500N weight by applying only 100N. What is the mechanical advantage of the s
Vanyuwa [196]

Answer:

The answer is 5

Explanation:

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4 years ago
A refrigerator receives 240 V of electricity. If it uses 32 A of current, what is the resistance of the refrigerator?
Leokris [45]

\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}

Actually Welcome to the Concept of the Ohms Law,

According to the Ohms law,

V = I*R, where, V = Voltage, I = Current, R = resistance,

so here given as, V = 240 V, I = 32 A,

so we get as, R = 240/32

R = 7.5 ohms,

===> The resistant R is ==> 7.5 ohms.

7 0
3 years ago
How is velocity different than speed?
spayn [35]
I hope this helps

velocity is the rate and speed of an objects moving.

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