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4 years ago

Two unequal forces acting in opposite directions result in a what force

1 answer:

6 0

It might be resultant, I don't think it's net force because that's just the difference of the forces but it could be an unbalanced force

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If you are rowing a boat, you should be most concerned if you see a wave with which characteristic? help asap pls

3241004551 [841]

The best answer would be C. Amplitude is the measure of the distance between the crest and the center of the line, or the distance between the trough and the center of the line (like wave height). High waves are a sea danger, especially to small ships and rowboats.

4 0

3 years ago

The atoms ,molecules,or compound present at the start of a chemical reaction that parcitipate in the reaction . which part of a

Tomtit [17]

Answer:

The atoms ,molecules, or compound present at the start of a chemical reaction that parcitipate in the reaction are <u><em>the reactants.</em></u>

Explanation:

The chemical reaction is the way in which one substance reacts against another. So, a chemical reaction consists of the transformation of some substances into others, that is, the process of arranging atoms and bonds when chemical substances come into contact.

In a chemical reaction, the initial substances are called reactants, while the new substances obtained are called products.

So, <u><em>the atoms ,molecules, or compound present at the start of a chemical reaction that parcitipate in the reaction are the reactants.</em></u>

8 0

4 years ago

Can someone please help me with this. thank u ❤️

MissTica

answer:projectile motion

Explanation:

Since gravity acts vertically, there is no acceleration in the horizontal (x) direction. This special type of two-dimensional motion is called projectile motion.

7 0

3 years ago

Read 2 more answers

Starting from rest, your friend dives from a high cliff into a deep lake below, yelling in excitement at the thrill of free-fall

Olegator [25]

Answer:

2 seconds

Explanation:

f = Frequency of yell = 919 Hz

$\Delta f$ = Shifted frequency = 55.9 Hz

v = Speed of sound in air = 342 m/s

$v_r$ = Velocity of friend

a = Acceleration due to gravity = 9.81 m/s²

From the Doppler shift formula we have

$\dfrac{f+\Delta f}{f}=\dfrac{v}{v-v_r}\\\Rightarrow v_r=v-\dfrac{vf}{f+\Delta f}\\\Rightarrow v_r=342-\dfrac{342\times 919}{919+55.9}\\\Rightarrow v_r=19.61\ m/s$

The velocity of the my friend is 19.61 m/s

$v=u+at\\\Rightarrow t=\dfrac{v-u}{a}\\\Rightarrow t=\dfrac{19.61-0}{9.8}\\\Rightarrow t=2\ s$

The time my friend is in the air is 2 seconds

7 0

3 years ago

A pendulum is made up of a metal cylinder of diameter d attached to a thin string. The pendulum passes through a photogate at th

ankoles [38]

The calculated total mechanical energy will reduce if the oscillation is not perpendicular to the photogate.

<h3>Mechanical energy at the lowest position of the pendulum</h3>

The mechanical energy at the lowest position of the pendulum is calculated as follows;

$U = K.E = \frac{1}{2}mv^2$

<h3>When the direction of the motion changes</h3>

let the velocity of the pendulum = vsin(θ)

when the velocity is perpendicular = vsin(90) = v

At any direction different from perpendicular direction, the mechanical energy reduces by;

$\Delta U = \frac{1}{2} mv^2 - \frac{1}{2} m(vsin\theta)^2\\\\\Delta U = \frac{1}{2} m(v^2 - v^2sin^2\theta)\\\\\Delta U = \frac{1}{2} mv^2(1 - sin^2\theta )$

Thus, the calculated total mechanical energy will reduce if the oscillation is not perpendicular to the photogate.

Learn more about mechanical energy here: brainly.com/question/24443465

5 0

2 years ago