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zhenek [66]
3 years ago
7

Suppose you are driving a car and your friend, who is with you in the car, tosses a softball up and down from her point of view.

A second friend of yours stands on the street and sees you passing by and says, "You are testing projectile motion with the softball!". Your friend on the street claims that each of you measures a different value for the vertical component of the initial velocity of the softball. Do you agree with the statement?
Physics
1 answer:
Sholpan [36]3 years ago
3 0

Answer:

No, i disagree.

Explanation:

If the car is moving, it only has a velocity with a component in the horizontal direction. If we use galilean relativity, the velocity of the ball observed by my friend standing in the ground should only be affected in the horizonal direction, while the vertical stays the same for both observers.

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Which of the following measurements involve a direction
insens350 [35]

Answer:

I think it is Velocity idk but does it hurt to try

8 0
3 years ago
A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reach
Nookie1986 [14]

Answer:489 Revolutions

Explanation:

Given

Angular deceleration(\alpha ) =1.5rad/s^2

Given wheel angular velocity =96 rad/s when machine is turned off

time taken by machine to reach zero angular velocity

0=\omega _0+(\alpha)t

0=96+(-1.5)t

t=64 sec

angular displacement is given by

\theta =\omega_0t+\frac{1}{2}\alpha t^2

\theta =96(64)-\frac{1}{2}(-1.5)(64^2)=3072 degree

For revolutions =\frac{3072}{2\cdot \pi}=488.86 \approx 489 revolution during Slowdown

5 0
3 years ago
water vapor contained in a piston–cylinder assembly undergoes an isothermal expansion at 240°c from a pressure of 7 bar to a pre
mafiozo [28]

The ideal gas constant is a proportionality constant that is added to the ideal gas law to account for pressure (P), volume (V), moles of gas (n), and temperature (T) (R). R, the global gas constant, is 8.314 J/K-1 mol-1.

According to the Ideal Gas Law, a gas's pressure, volume, and temperature may all be compared based on its density or mole value.

The Ideal Gas Law has two fundamental formulas.

PV = nRT, PM = dRT.

P = Atmospheric Pressure

V = Liters of Volume

n = Present Gas Mole Number

R = 0.0821atmLmoL K, the Ideal Gas Law Constant.

T = Kelvin-degree temperature

M stands for Molar Mass of the Gas in grams Mol d for Gas Density in gL.

Learn more about Ideal gas law here-

brainly.com/question/28257995

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7 0
1 year ago
An electrical circuit is powered by a 1.5-volt battery and contains a light bulb producing 5 Ohms of resistance. There is also a
Fed [463]

Answer:

if the resistor is fitted in series with the bulb , then the current flowing will be 0.15 A.....

if the resistor if fitted in parallel with the bulb ,

the current flowing will be 0.6 A

Explanation:

total potential difference = 1.5V

when resistors in series ,

total equivalent resistance is = 5 + 5 = 10 ohm

so current = 1.5 ÷ 10 = 0.15

when resistors in parallel ,

total equivalent resistance is = (5 × 5)÷(5 + 5) =2.5 ohm

so current = 1.5÷2.5 = 0.6 A

8 0
3 years ago
In what situations do Newton’s laws of motion NOT apply?
jok3333 [9.3K]

Answer:

In a naive or very general sense, it appears that Newton's combined first and second law, F = ma , does not always work. On a fairground ride such as a merry-go-round, or on a turning bus, unrestrained objects have unexplained horizontal accelerations.

7 0
3 years ago
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