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3 years ago

12

Ross is training for a half marathon, which is 13.1 miles long. Within four months, he has progressed to an 11-mile practice run

. If Ross takes two months off from training, what will most likely occur?.?

1 answer:

Serggg [28]3 years ago

7 0

Answer:

jwjwjwjjwjejejjejrjrjrjr

Explanation:

jwjwjwjwjwjjejejejejejekei

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On a cello, the string with the largest linear density (1.44 x 10-2 kg/m) is the C string. This string produces a fundamental fr

Rus_ich [418]

Answer:

$T=346.5N$

Explanation:

From the question we are told that:

Density $\rho= (1.44 * 10^{-2} kg/m)$

Frequency $F=93.0Hz$

Length $l=0.834m$

Generally the equation for Frequency is mathematically given by

$F=\frac{1}{2 l}sqrt{\frac{T}{\rho}}$

Therefore

$T=\rho(2 lF)^2$

$T= (1.44 * 10^{-2}*(2*0.834)(93.0))^2$

$T=346.5N$

4 0

3 years ago

PLS HELP ILL GIVE U A BRAINLEST

Ipatiy [6.2K]

Answer:

The car on the left side picture was on the left side it moved to right in the picture on the right

Explanation:

the car moved from left to right

3 0

3 years ago

As Luke rides his bike down a hill, potential energy is converted to kinetic energy. What is this an example of?

Musya8 [376]

Answer:

If I am correct, the answer is D. Law of conservation of energy

Explanation:

the potential energy "converts" to kinetic once Luke is in motion.

5 0

3 years ago

a ball rolls off the edge of a 2m high shelf at a speed of 5 m/s and hits the ground the taken to hit the ground is

RUDIKE [14]

Answer:

Explanation:

Use the one-dimensional equation

Δx = $v_0t+\frac{1}{2}at^2$ where delta x is the displacement of the object, v0 is the velocity of the object, a is the pull of gravity, and t is the time in seconds. That's our unknown.

Δx = -2 (negative because where it ends up is lower than the point at which it started),

$v_0=5$ , and

a = -9.8

Filling in:

$-2=5t+\frac{1}{2}(-9.8) t^2$ and simplified a bit:

$-2=5t-4.9 t^2$

this should look hauntingly familiar (a quadratic, which is parabolic motion...very important in physics!!). We begin by getting everything on one side of the equals sign and solving for t by factoring:

$-4.9 t^2+5t+2=0$ (the 0 is also indicative of the object landing on the ground! Isn't this a beautiful thing, how it all just works so perfectly together?)

When you factor this however your math/physics teacher has you factoring you will get that

t = 1.3 sec and t = -.31 sec

Since we all know that time can NEVER be negative, it takes the ball 1.3 sec to hit the ground from a height of 2 m if it is rolling off the shelf at 5 m/s.

3 0

3 years ago

A conductor of radius r, length and resistivity ρ has resistance r. what is the new resistance if it is stretched to 4 times its

max2010maxim [7]

The resistance of a conductor is given by
$R= \frac{\rho L}{A}$
where L is the length of the wire, $\rho$ the resistivity of the material and A the cross-sectional area.

We can see that if all the other quantities do not change, if the new length of the conductor is 4 times the original length: $L'=4 L$ , then the new resistance is also 4 times the original value:
$R'= \frac{\rho L'}{A}= \frac{\rho 4 L}{A}=4 \frac{\rho L}{A}=4 R$

7 0

4 years ago