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Mademuasel [1]
3 years ago
15

What is the distance a bullet will travel when launched at 166 meters per second for 5.75seconds?

Physics
1 answer:
vodka [1.7K]3 years ago
3 0
166x5.75= 954.5 meters in 5.75 seconds.
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Both positive and negative charges will spread the leaves of an uncharged electroscope.
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The answer is A)TRUE.
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If the distance between the two objects is reduced in half, what will be the changed force of attraction between them?
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The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0° above the horizo
Jobisdone [24]

(a) 4.0 m/s

We can solve this part just by analyzing the vertical motion of the froghopper.

The initial vertical velocity of the froghopper as it jumps from the ground is given by

u_y = u_0 sin \theta (1)

where

u_0 is the takeoff speed

\theta=58.0^{\circ} is the angle of takeoff

The maximum height reached by the froghopper is

h = 58.7 cm = 0.587 m

We know that at the point of maximum height, the vertical velocity is zero:

v_y = 0

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v_y^2 - u_y^2 = 2gh

Solving for u_y,

u_y = \sqrt{v_y^2-2gh}=\sqrt{-2(-9.8)(0.587)}=3.4 m/s

And using eq.(1), we can now find the initial takeoff  speed:

u_0 = \frac{u_y}{sin \theta}=\frac{3.4}{sin 58.0^{\circ}}=4.0 m/s

(b) 1.47 m

For this part, we have to analyze the horizontal motion of the froghopper.

The horizontal velocity of the froghopper is

u_x = u_0 cos \theta = (4.0) cos 58.0^{\circ} =2.1 m/s

And this horizontal velocity is constant during the entire motion.

We now have to calculate the time the froghopper takes to reach the ground: this is equal to twice the time it takes to reach the maximum height.

The time needed to reach the maximum height can be found through the equation

v_y = u_y + gt

Solving for t,

t=-\frac{u_y}{g}=-\frac{3.4}{9.8}=0.35 s

So the time the froghopper takes to reach the ground is

T=2t=2(0.35)=0.70 s

And since the horizontal motion is a uniform motion, we can now find the horizontal distance covered:

d=u_x T = (2.1)(0.70)=1.47 m

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The smallest difference in voltage that can be resolved is referred to as the resolution. The resolution can be calculated with the following formula:
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