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mr_godi [17]
3 years ago
7

27. A 0.150 kg baseball is thrown upward with an initial

Physics
1 answer:
Tema [17]3 years ago
4 0

Answer:

a. 1.47N

b. 1.47N

Explanation:

Given:

Mass of the baseball = 0.150kg

The initial velocity of the baseball = 20m/s

The force acting on the baseball is only due to gravity and the air resistance is negligible. The baseball acceleration is constant due to gravity.

According to Newton's second law:

F_{w} =mg----------(1)

where mass of the baseball m = 0.150kgAnd acceleration due to gravity [tex]g = 9.8m/s^{2}

Put all the value in equation 1.

F_{w} =0.150\times -9.8

F_{w} =-1.47N

Therefore, the force on the ball when it reaches half of its maximum height is 1.47N.

Similarly, the force acting on the ball when its peak 1.47N.

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Up-regulation involves the loss of receptors and prevents the target cells from overreacting to persistently high hormone levels
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Answer:

False.

Explanation:

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3 years ago
A liquid has a density of 0.85 g/cm. If you pour some of the liquid into a glass of water, will the liquid float?
muminat

Answer:

Yes, it will float.

Explanation:

It is given that,

A liquid has a density of 0.85 g/cm³.

We know that, the density of water is 1 g/cm³.

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4 0
3 years ago
A cable passes over a pulley. Because the cable grips the pulley and the pulley has nonzero mass, the tension in the cable is no
topjm [15]

Answer:

\alpha=214.8 rad/s^2

Explanation:

We are given that

F_1=137 N

F_2=43 N

Net force=F=F_1-F_2=137-43=94 N

Mass,m=1.21 kg

Radius,r=0.723 m

We have to find the magnitude of its angular acceleration.

Moment of inertia ,I=\frac{1}{2}mr^2

Substitute the values

Torque ,\tau=I\alpha

F_{net}\times r=\frac{1}{2}mr^2\alpha

\alpha=\frac{2F_{net}}{mr}

\alpha=\frac{2\times 94}{1.21\times 0.723}

\alpha=214.8 rad/s^2

4 0
3 years ago
Which group was guaranteed voting rights by the Fifteenth Amendment?
castortr0y [4]

Explanation:

The 15th Amendment to the U.S. Constitution granted African American men the right to vote by declaring that the "right of citizens of the United States to vote shall not be denied or abridged by the United States or by any state on account of race, color, or previous condition of servitude." Although ratified on February 3, 1870, the promise of the 15th Amendment would not be fully realized for almost a century. Through the use of poll taxes, literacy tests and other means, Southern states were able to effectively disenfranchise African Americans. It would take the passage of the Voting Rights Act of 1965 before the majority of African Americans in the South were registered to vote.

3 0
4 years ago
Read 2 more answers
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