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3 years ago

What is tan θ for the given triangle?

Physics

2 answers:

yulyashka [42]3 years ago

7 0

Tan = opposite/adjacent
= 20/15
=4/3

Nuetrik [128]3 years ago

4 0

Answer:

it's C

Explanation: 4/3=1.33

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What is the kinetic energy of a bicycle with a mass of 16 kg traveling at a velocity of 5 m/s

fenix001 [56]

Answer:

200J

Explanation:

K.E=½mv²

K.E=½×16kg×5m/s²

K.E=8kg×25

K.E=200J

4 0

2 years ago

A wheel rotates clockwise 10 times per second. what is its angular speed answer

bogdanovich [222]

The frequency of the wheel is the number of revolutions per second:
$f= \frac{N_{rev}}{t}= \frac{10}{1 s}=10 Hz$
And now we can calculate the angular speed, which is given by:
$\omega = 2 \pi f=2 \pi (10 Hz)=62.8 rad/s$ in the clockwise direction.

3 0

3 years ago

You hang different masses M from the lower end of a vertical spring and measure the period T for each value of M. You use Excel

goblinko [34]

We the Period T we can find the constant k,

That is

$T = 2 \pi \sqrt{\frac{m}{k}}$

We delete the squart root elevating squareing everything,

$T^2=\frac{4\pi^2}{k}M +\frac{4\pi^2}{k}m_{spring}$

M is the hanging mass, m is the spring mass,

k is the spring constant and T the time period

a) So for the equation we can compare, that is,

$y=T^2=0.0569x+0.0010$

Here x is the hanging mass M, so comparing the equation we know that

$\frac{4\pi^2}{k}=0.0569\\k= \frac{4\pi^2}{0.0569}\\k=693.821N/m$

b) For the mass of the spring we make similar process, so comparing,

$\frac{4\pi^2}{k}m =0.001\\m=\frac{0.004k}{4\pi^2} =\frac{0.001*693.821}{4\pi^2}\\m=0.0175kg\\m=17.5g$

6 0

2 years ago

A uniform steel rod of length 0.9 m and mass 3.8 kg has two point masses of 2.3 kg each at the two ends. Calculate the moment of

polet [3.4K]

Answer: $2.4705\ kg.m^2$

Explanation:

Given

length of the rod is L=0.9 m

Mass of the rod m=3.8 kg

Point masses has mass of m=2.3 kg

Moment of Inertia of the rod about the center is

$\Rightarrow I_o=\dfrac{1}{12}ML^2$

Moment of inertia of combined system is the sum of rod and two point masses.

$\Rightarrow I=I_o+2mr^2$

$\Rightarrow I=\dfrac{1}{12}3.8\times 0.9^2+2\times 2.3\times \left(\dfrac{0.9}{2}\right)^2\\\\\Rightarrow I=1.539+0.9315\\\Rightarrow I=2.4705\ kg-m^2$

3 0

3 years ago

Guillermo has decided that he wants to be healthier, so he starts jogging. he has been at it for a week, but he is getting frust

Mashutka [201]

He does not have much endurance since he is new to exercise. This explains best why Guillermo is struggling.

<h3>What is Endurance?</h3>

An organism's capacity to exert itself and remain active for a prolonged period of time, as well as its capacity to resist, withstand, recover from, and have immunity to trauma, wounds, or exhaustion, are all examples of endurance (also related to sufferance, resilience, constitution, fortitude, and hardiness). Usually, it is employed in anaerobic or aerobic exercise.
Depending on the type of activity, "long" can mean anything from minutes for high-intensity anaerobic exercise to hours or days for low-intensity aerobic exercise.
Unless a person additionally engages in resistance training to offset this effect, training for endurance can impair the ability to exert endurance strength.

To know more about endurance with the given link

brainly.com/question/1303431

#SPJ4

7 0

2 years ago