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3 years ago

Choose the answer to fill in the blank, which best completes the sentence.

Physics

2 answers:

Nataliya [291]3 years ago

8 0

Answer:

a. convey different messages.

Explanation:

Got it on edge just took the test.

Allisa [31]3 years ago

4 0

Answer:

A on edge 2020

Explanation:

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To determine a waves' frequency, you must know the

kykrilka [37]

B. number of oscillations in a given period of time.

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4 years ago

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An object is sitting on the floor. A 22.4 N force is pulling the object to the right and an 11 N force is pulling the object to

Nimfa-mama [501]

answer = 33.4 net force.

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3 years ago

Two pro baseball players of the same height are testing how far they can throw. One players throws the ball at a 40.0 degrees an

Viktor [21]

Answer:

The distance traveled by the ball before it lands in the other player's glove is 130.96 m.

Explanation:

Given;

angle of projection of the ball, θ = 40⁰

initial velocity of the ball, u = 36.1 m/s

The distance traveled by the ball before it lands in the other player's glove is the range of the projectile, calculated as follows;

$R = \frac{u^2 sin(2\theta)}{g} \\\\R= \frac{36.1^2 \times sin(2\times 40)}{9.8} \\\\R = \frac{36.1^2 \times sin(80)}{9.8} \\\\R = 130.96 \ m$

Therefore, the distance traveled by the ball before it lands in the other player's glove is 130.96 m.

6 0

3 years ago

A man pushed a cabinet with a force of 200N. What is the mass of the cabinet that accelerates 4 m/s/s?

ELEN [110]

Answer:

$\boxed {\boxed {\sf 50 \ kg}}$

Explanation:

We are asked to find the mass of a cabinet, given the force and acceleration. According to Newton's Second Law of Motion, force is the product of mass and acceleration. The formula for this is:

$F= m \times a$

The force is 200 Newtons, but we should convert the units to make unit cancellation easier. 1 Newton is equal to 1 kilogram meter per second squared, so the force of 200 Newtons is 200 kilogram meters per second squared.

The mass is unknown and the acceleration is 4 meters per second per second or 4 meters per second squared.

F= 200 kg*m/s²
a= 4 m/s²

Substitute the values into the formula.

$200 \ kg *m/s^2 = m \times 4 \ m/s^2$

We are solving for the mass, m, so we must isolate the variable. It is being multiplied by 4 meters per second squared. The inverse operation of multiplication is division. Divide both sides by 4 m/s²

$\frac {200 \ kg *m/s^2}{4 \ m/s^2}= \frac{m \times 4\ m/s^2}{4 \ m/s^2}$