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3 years ago

Not so fast! If a force of 2500 N is used over

Physics

1 answer:

Masteriza [31]3 years ago

3 0

Answer:

B 1500N

Explanation:

The acceleration of the car - at least the average one, but that will do, is $a= \frac{\Delta v}{\Delta t} = \frac 53 ms^{-2} = 1.66 ms^{-2}$

We know the acceleration, we know the force, let's drop them in Newton second law.

$F= ma = 2500= m \frac53 \rightarrow m=500\times 3 N = 1500N$

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A 2600-m-high mountain is located on the equator. how much faster does a climber on top of the mountain move than a surfer at a

puteri [66]

The climber move 0.19 m/s faster than surfer on the nearby beach.

Since both the person are on the earth, and moves with the constant angular velocity of earth, however there linear velocity is different.

Number of seconds in a day, t=24*60*60=86400 sec

The linear speed on the beach is calculated as

V1= $\frac{2πr}{t}$

Here, t is the time

Plugging the values in the above equation

V1= $\frac{2π*6.4*10^6}{86400}$ =465.421 m/s

Velocity on the mountain is calculated as

V2= $\frac{2π(r+h)}{t}$

Plugging the values in the above equation

V2= $\frac{2π(6.4*10^6+2600}{86400}$ =465.61 m/s

Therefore person on the mountain moves faster than the person on the beach by 465.61-465.421=0.19 m/s

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3 years ago

At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats faci

Klio2033 [76]

Answer:

The radius of a chamber is 2.36 meters.

Explanation:

Given that,

The outer wall moves at a speed of 2.72 m/s.

Mass of the person, m = 75.1 kg

The person feels a force of 235 N force pressing against his back. The force acting on the person is centripetal force. It is given by the below formula :

$F=\dfrac{mv^2}{r}$

r is the radius of a chamber

$r=\dfrac{mv^2}{F}$

$r=\dfrac{75.1\times (2.72)^2}{235}$

r = 2.36 meters

So, the radius of a chamber is 2.36 meters. Hence, this is the required solution.

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3 years ago

________________________ is the use of circuitry to manipulate the transfer of electrical energy by controlling the closed path.

Alekssandra [29.7K]

Answer:

switch

Explanation:

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3 years ago

The dwarf planet Pluto was discovered in 1930. Since that time, which jovian planet has completed a full revolution around the S

Eva8 [605]

Answer:

Explanation:

Uranus takes about 84 years to circle the sun.

Pluto's existance has been known for 92 years. Uranius has completed 1 complete revolution. The numbers are reasonably close together and so Uranius is the answer.

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3 years ago

14 km equals how much meters

MrRa [10]

14 km equals 14,000 metres

6 0

3 years ago

Read 2 more answers