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emmainna [20.7K]
2 years ago
11

Someone please help really confused

Physics
1 answer:
Taya2010 [7]2 years ago
5 0

Answer:

answer c: a mass and volume

Explanation:

no matter what elements are chosen, they all have a mass and volume measurement I believe

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Two blocks are suspended from opposite ends of a light rope that passes over a light, frictionless pulley. One block has mass m1
rewona [7]

Answer:

a)  m₁ = 1.41 kg , b)  m₂ = 2.65 kg

Explanation:

For this exercise we will use Newton's second law

Block 1

             T - W₁ = m₁ a

Block 2

           W₂ - T = m₂ a

We have selected the positive  block 1 rising and block two lowering, as the pulley has no friction does not affect the movement

Let's use kinematics to look for acceleration

         y = v₀ t + ½ a t²

As part of the rest the initial speed is zero

           a = 2 y / t²

           a = 2 6.00 / 2²

           a = 3 m / s²

Let's replace in the equation of block 1

a)   T = m₁ g + m₁ a

     m₁ = T / (g + a)

     m₁ = 18.0 / (9.8 + 3)

     m₁ = 1.41 kg

b) we substitute in the equation of block 2

     W₂ - T = m₂ a

     m₂ g - m₂ a = T

     m₂ = T / (g-a)

     m₂ = 18.0 / (9.8 -3)

    m₂ = 2.65 kg

4 0
3 years ago
Gravity can be defined as a force of attraction between objects. The effects of gravity can be witnessed in many systems. Which
murzikaleks [220]
C, planets orbit around the sun because of gravity
5 0
3 years ago
How does a vector quantity differ from a scalar?
otez555 [7]
A
hope this helped !!!
8 0
3 years ago
Read 2 more answers
SOMEONE HELP  ASAP PLSS
kirill115 [55]

–0.05 m/s

Explanation:

The total momentum of the system player+basketball must be conserved before and after the ball has been thrown.

Before throwing the ball, the total momentum of the system is zero, because can assume both the player and the basketball being at rest:

p_i

The total momentum after the ball has been thrown is instead the sum of the momenta of the the player and of the basketball:

p_f=m_p v_p + m_b v_b

where

m_p = 59 kg is the player's mass

v_p is the player's velocity

m_b=0.51 kg is the ball's mass

v_b=6 m/s is the ball's velocity

For the conservation of momentum, we have

p_i=p_f

0=m_p v_p + m_b v_b

v_p=-\frac{m_b v_b}{m_p}=-\frac{(0.51 kg)(6 m/s)}{59 kg}=-0.05 m/s

And the negative sign means that the player travels in the opposite direction to the ball.

8 0
3 years ago
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Atoms of the same element that differ only in the number of neutrons are known as.
True [87]

Answer:

They are known as isotopes

7 0
3 years ago
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