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4 years ago

Which statement about subatomic particles is not true

Physics

1 answer:

Romashka [77]4 years ago

6 0

On the list of statements that you included with your question, there are no untrue ones.

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Wich of yhe following is true A mass drpendent on gravity and weight is dependent on gravity B mass is not dependent on gravity

Diano4ka-milaya [45]

C I believe is the answer

6 0

3 years ago

Read 2 more answers

Help and explain please

babunello [35]

Answer: a) Moment = 200N.m

b) F = 500N

Explanation: Moment or Torque is the tendency of a body to rotate because of an aplplied force. It can be calculated as

$\tau = F.r.sin\theta$

F is force applied

r is distance from the force to the point of rotation

θ is the angle formed between force and distance

a) Since F and r are perpendicular, θ=90°, sin90° = 1, so

$\tau=F.r$

$\tau=100(2)$

$\tau=$ 200

Torque caused by weight of the barrier at the pivot is 200N.m

b) Counterweight has the same torque as pivot: $\tau=$ 200

So, to find Force necessary to balance the weight:

$\tau=F.r$

$F=\frac{\tau}{r}$

$F=\frac{200}{0.4}$

F = 500

It is necessary a force of 500N from the counterweight to balance the weight.

4 0

3 years ago

a child stands with each foot on a different scale. The left scale reads 200N and the right scale reads 150N. what is her mass i

vitfil [10]

Answer:

35.7 kg

Explanation:

We are given that

Left scale reads =200N

Right scale reads=150 N

We have to find the mass in kg.

We know that

Weight of child= Sum of two scales=200+150=350 N

Acceleration due to gravity= $9.8 m/s^2$

We know that

Weight= mg

Using the formula

$350=9.8 m$

$m=\frac{350}{9.8}=35.7 kg$

Hence, the mass of child=35.7 kg

4 0

3 years ago

PLEASE HELP!! DUE SOON!!!

Alecsey [184]

The answer is D, all responses are correct

7 0

3 years ago

Read 2 more answers

6.A truck drives to a rock quarry at a speed of 20 m/s. The truck takes on a load of

Karolina [17]

Explanation:

The kinetic energy is basically the energy possesses by virtue of a body's motion

1. The truck moving to the quarry

let the mass be x

and the velocity is given as 20m/s

we know that the kinetic energy is given as

KE=1/2mv^2

KE=1/2(x)*20^2

KE=1/2(x)400

KE=200x

2. The truck leaving to the quarry

let the mass be 2x

and the velocity is given as 20m/s

we know that the kinetic energy is given as

KE=1/2mv^2

KE=1/2(2x)*20^2

KE=1/2(2x)400

KE=400x

From the analysis the kinetic energy is a function of mass, doubling the mass doubles the kinetic energy

4 0

3 years ago