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3 years ago

13

Find the horizontal and vertical components of a projectile that is fired with a velocity of 50m/s at 30 degrees relative to the

horizontal.

1 answer:

VashaNatasha [74]3 years ago

5 0

Find this answer on safari and if you can’t reply to me and i’ll help

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An 8kg soccer ball starts at rest and is kicked 31.5 meters until it reaches a final velocity of 21m/s in 3 seconds. Assuming th

likoan [24]

Answer:

The power with which the soccer ball moved is 588 W .

Explanation:

Given :

Mass of soccer ball , m = 8 kg .

Distance moved , d = 31.5 m .

Final velocity , v = 21 m/s .

Time taken , t = 3 s .

Force applied , F = 56 N .

We know , power is given by :

$P=\dfrac{Work \ Done }{Time \ Taken }$ ......( 1 )

Now , work done is given by :

$W = Fd = 56\times 31.5\ J\\\\W=1764\ J$

Now , putting value of P and t in equation 1 .

We get :

$P=\dfrac{1764}{3}\ W\\\\P=588\ W$

Therefore , this is the required solution .

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3 years ago

How can we use magnetic fields to transport objects from one location to another?

sergejj [24]

Wow this is a tough one

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3 years ago

Considerable scientific work is currently under way to determine whether weak oscillating magnetic fields such as those found ne

slega [8]

Answer:

$\epsilon = 2.96 \times 10^{-11} \ V$

Explanation:

given,

magnetic field strength = 1.40 ✕ 10⁻³ T

frequency of oscillation = 60 Hz

diameter of RBC = 7.5 μm

EMF = ?

$\epsilon = NBA\omega$

$\epsilon = NB(\pi\ r^2)\ (2\pi f)$

$\epsilon = NB(\pi\ (\dfrac{d}{2})^2)\ (2\pi f)$

$\epsilon = (1)\ 1.4 \times 10^{-3}(\pi\ (\dfrac{7.5 \times 10^{-6}}{2})^2)\ (2\pi\times 60)$

$\epsilon = 2.96 \times 10^{-11} \ V$

maximum emf that can generate around the perimeter of the cell $\epsilon = 2.96 \times 10^{-11} \ V$

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3 years ago

What are elements made up of?<br><br> atoms<br><br> matter<br><br> Hydrogen<br><br> substance

gavmur [86]

Elements are made up of atoms

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3 years ago

A ball is thrown downward at 5ms from roof 10m high its velocity when it reaches the ground is?,

lions [1.4K]

<span>A ball is thrown downward at 5ms from roof 10m high its velocity when it reaches the ground is 0 m/s. This is because it already dropped from the ground or x axis. So the velocity already stopped. </span>

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4 years ago