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3 years ago

1. A plane flying a triangular patter flies 150 km[N], then 400 km(E). What is the total displacement of the

Physics

1 answer:

zhenek [66]3 years ago

6 0

Answer:

1. The displacement is 427.2 km.

Explanation:

1. A = 150 km North

B = 400 km East

The net displacement is given by

$R =\sqrt{400^2 + 150^2 }\\\\R = 427.2 km$

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Tom and Mary are riding a merry-go-round. Tom is on a horse about half way between the center and the outer rim, and Mary is on

iren2701 [21]

Answer:

Explanation:

Given

Tom is on half way between the center and the outer rim

Mary is on the extreme outer rim

Suppose $\omega$ is the angular velocity of ride with radius of outer rim be R

$\alpha =$ angular acceleration of Ride

At any instant both Tom and Mary experience the same angular speed

(b)Linear velocity at any instant

$v_{Tom}=\omega \times R$

$v_{Mary}=\omeag \times \frac{R}{2}$

Thus Tom has higher linear speed

$a_r=\omega ^2\times r$

$a_{Tom}=\omega ^2\times R$

$a_{Mary}=\omega ^2\times \frac{R}{2}$

Tom has higher radial Acceleration as it is directly Proportional of radius

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3 years ago

A 250 kg flatcar 25 m long is moving with a speed of 3.0 m/s along horizontal frictionless rails. A 61 kg worker starts walking

Anna11 [10]

Answer:

x=31.09m

Explanation:

p1=p2

The momentum of flatcar and the momentum of the worker so

The velocity of the worker is:

$m_{f}*v_{f}=m_{w}*v_{w}\\\\v_{f}=\frac{m_{f}*v_{f}}{m_{w}}\\v_{f}=\frac{61kg*3.0\frac{m}{s}}{250kg}\\v_{f}=0.732\frac{m}{s}$

The total motion has a total velocity and is

$Vt=v_{w}+v_{f}\\Vt=0.732\frac{m}{s}+3.0\frac{m}{s}\\Vt=3.732\frac{m}{s}$

The time the worker take walking is

$t=\frac{x}{v_{w}}\\t=\frac{25m}{3\frac{m}{s}}=8.33s$

Now the total time and the total velocity determinate the motion of tha flatcar how far has moved

$x=t*Vt\\x=8.33s*3.732\frac{m}{s} \\x=31.09m$

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3 years ago

What is the primary energy that powers a car

docker41 [41]

Answer:

Kinetic Energy

Explanation:

Kinetic energy is moving energy

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3 years ago

The Kentucky Derby is a 1¼ mile race. Mandaloun ran it in 1.52 minutes. Hot Rod Charlie ran at a speed of .79 miles per minute.

artcher [175]

Answer:

Mandaloun won the race.

Explanation:

First, we will calculate the time taken by the Hot Rod Charlie:

$s = vt\\t = \frac{s}{v}$

where,

t = time taken by Hot Rod Charlie = ?

s = distance covered = 1.25 miles

v = speed of Hot Rod Charlie = 0.79 miles/min

Therefore,

$t = \frac{1.25\ miles}{0.79\ miles/min} \\t = 1.58 min$

Since Hot Rod Charlie took more time (1.58 min) than the Mandaloun (1.52 min).

<u>Therefore Mandaloun won the race.</u>

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3 years ago

In an experiment, the explanation of the expected outcome, based on research, is the _______________.

vladimir1956 [14]

C. Hypothesis
The hypothesis is presented as an explanation of the observed results.

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3 years ago