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4 years ago

The unique name given to each organism ; made up of Genus and species..is..?

Physics

1 answer:

True [87]4 years ago

6 0

A binomial nomenclature, more commonly referred to as a scientific name.

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The light from the Sun heats a metal surface

SOVA2 [1]

This is known as conduction.

6 0

4 years ago

Calculate the total energy of 2.0 kg object moving horizontally at 10 m/s 50 meters above the surface

mina [271]

We have:

Total Energy: KE + GPE
KE (Kinetic Energy) = $\frac{1}{2} m*v^2$
GPE (Gravitational Potential Energy) = $m*g*h$

Data:
m (mass) = 2.0 Kg
v (speed) = 10 m/s
h (height) = 50 m
Use: g (gravity) = 10 m/s²

Formula:

Total Energy: KE + GPE
$TE = \frac{1}{2} m*v^2 + m*g*h$

Solving:
$TE = \frac{1}{2} m*v^2 + m*g*h$
$TE = \frac{1}{2} *2.0*10^2 + 2.0*10*50$
$TE = \frac{2.0*100}{2} + 1000$
$TE = \frac{200}{2} + 1000$
$TE = 100 + 1000$
$\boxed{\boxed{TE = 1100\:Joule}}\end{array}}\qquad\quad\checkmark$

5 0

3 years ago

Read 2 more answers

A wave whose wavelength is 3.6 m has a frequency of 910.5 Hz. What is the wavespeed (v) of this wave?

Scrat [10]

3277.8 because wave speed is calculated by the equation Speed= wavelength • frequently

6 0

3 years ago

A projectile is fired at an angle such that the vertical component of its velocity

mestny [16]

Answer:

<em>It takes 3 seconds to reach its high point</em>

Explanation:

<u>Projectile Motion</u>

In a projectile motion (or 2D motion), the object is launched with an initial angle θ and an initial velocity vo.

The components of the velocity are

$v_{ox}=v_o\cos\theta$

$v_{oy}=v_o\sin\theta$

The speed in the horizontal direction at any time t is:

$v_y=v_o\sin\theta-g.t$

The time taken to reach the maximum height is when vy=0, or:

$\displaystyle t_m=\frac{v_o\sin\theta}{g}$

We are given the y-component of the velocity, thus:

$\displaystyle t_m=\frac{30~m/s}{10~m/s^2}$

$t_m=3~s$

It takes 3 seconds to reach its high point

3 0

3 years ago

Please help, Give a paragraph about Pulley's

Studentka2010 [4]

The pulley is really a wheel and axle with a rope or chain attached. A pulley makes work seem easier because it changes the direction of motion to work with gravity. Let's say you have to lift a heavy load, like a bale of hay, up to the second floor of a barn. You could tie a rope to the bale of hay, stand on the second floor, and pull it straight up. Or you could put a pulley at the second floor, stand at the first floor, and lift the bale of hay by pulling straight down. It would be the exact amount of work in either case, but the action of pulling down feels easier because you're working with the force of gravity.

A pulley really saves effort when you have more than one pulley working together. By looping a rope around two, three, or even four pulleys, you can really cut down on the effort needed to lift something. The trade-off? Well, as you increase the number of pulleys, you also increase the distance you have to pull the rope. In other words, if you use two pulleys, it takes half the effort to lift something, but you have to pull the rope twice as far. Three pulleys will result in one-third the effort — but the distance you have to pull the rope is tripled!

8 0

3 years ago