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andrew11 [14]
3 years ago
9

while a block slides forward 1.35 m, a force pulls back at a 135 direction, doing -17.8 J of work. what is the magnitude of the

force?(unit=N)PLEASE HELP
Physics
1 answer:
igomit [66]3 years ago
3 0

The magnitude of the force is 18.6 N

Explanation:

The work done by a force pushing/pulling an object is given by the equation:

W=Fd cos \theta

where:

F is the magnitude of the force

d is the displacement of the object

\theta is the angle between the direction of the force and the direction of the displacement

For the block in this problem, we have:

W=-17.8 J is the work done

d = 1.35 m is the displacement

\theta=135^{\circ} is the angle

Solving the equation for F, we find the magnitude of the force:

F=\frac{W}{dcos \theta}=\frac{-17.8}{(1.35)(cos 135)}=18.6 N

Learn more about work here:

brainly.com/question/6763771

brainly.com/question/6443626

#LearnwithBrainly

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ziro4ka [17]
d = u \times t \: + \frac{1}{2} \times a \times {t}^{2}
Since initial velocity is zero hence , u = 0

=> d = 1/2 * a * t2

d = 0.5 \times 9.8 \times {4.2}^{2}
on solving we get

d = 86.436 metres


Note ; Here Gravitational Acceleration is take as , g = 9.8 m/s2
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It does not it when put in the freezer it freezes the steam
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Although Mr. Tong was obviously busy reading an absorbing novel, his 5-year-old daughter kept interrupting him with comments and
nikklg [1K]

Answer:D) Egocentrism

Explanation:

Mr.Tong should be alerted to Piaget's concept of Egocentrism which is under the pre operational stage of Piaget's theory.

Following are the key features of Pre operational stage

  • Centration
  • Egocentrism
  • Play
  • Symbolic Representation
  • Pretend (or symbolic) Play
  • Animism
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  • Irreversibility

The feelings and actions of children are usually self-centered. Egocentrism refers to the failure of the child to see a situation from another person Perception.

The self-centered child believes that other people see, hear, and feel exactly the same as the child does, according to Piaget.

Here Also 5 year old daughter does not think about her father and ask question blatantly

3 0
4 years ago
What is the unit of measurement for power?<br> A. m/s2<br> B. watts<br> C. joules<br> D. newtons
anyanavicka [17]

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8 0
3 years ago
A constant net force that has a magnitude of 135.5 N is exerted on a 26.7 kg object that is initially not moving. a. Draw a free
jek_recluse [69]

Explanation:

Given that,

Net force = 135.5 N

Mass = 26.7 kg

(a). We need to draw a free body diagram

A force is exerted on a object.

(b). We need to calculate the acceleration

Using formula of acceleration

a =\dfrac{F}{m}

a=\dfrac{135.5}{26.7}

a=5.07\ m/s^2

(c). We need to draw the sketch a position vs. time graph for the object.

Using equation of motion

s=ut+\dfrac{1}{2}at^2

Put the value into the formula

s=0+\dfrac{1}{2}\times5.07\times t^2

s=2.535 t^2

(d). We need to draw the sketch a velocity vs. time graph for the object.

Using equation of motion

v = u+at

Put the value into the formula

v=0+5.07t

v =5.07 t

(e). We need to calculate the distance travel in 8.82 s

Using equation of motion

s=ut+\dfrac{1}{2}at^2

s=0+\dfrac{1}{2}\times5.07\times(8.82)^2

s=197.20\ m

Hence, This is the required solution.

8 0
3 years ago
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