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3 years ago

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1 answer:

5 0

1) Swimming at 2 miles per hour
2) Walking at 3 miles per hour 
3) Running at 7 miles per hour 
4) Jogging at 5 miles per hour

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If a bicyclist, with initial velocity of zero, steadily gained speed until reaching a final velocity of 26m/s, how far would she

svetlana [45]

Answer:

34.45m

Explanation:

Using the equation of motion formula v² = u²+2as to get the distance travelled

v is the final velocity = 26m/s

u is the initial velocity = 0m/s

a is the acceleration due to gravity = 9.81m/s²

S is the distance travelled

Substituting the given values into the formula;

26² = 0²+2(9.81)s

676 = 0 + 19.62s

19.62s = 676

s = 676/19.62

s = 34.45m

Hence the distance she would travel during the race is 34.45m

7 0

3 years ago

X-rays cannot pass through Earth's atmosphere. Which of these is the best location to place a telescope used to observe x-rays f

Amiraneli [1.4K]

Mountains, tops of buildings, and high-flying aircraft are all part of Earth's atmosphere, no matter how high they are. On the other hand, space doesn't belong to our atmosphere, it is outside of it. Having this in mind, the best location to place a telescope used to observe x-rays from stars is in space.

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3 years ago

Read 2 more answers

imagine that two balls, a basketball and a much larger exercise ball, are dropped from a parking garage. If both the mass and ra

tiny-mole [99]

Hypothesis

Let there is no air drag or any other resistance force due to surrounding

Now the force equation of ball is given as

$F = mg$

$ma = mg$

$a = g$

so the ball will be dropped down by acceleration a = g and this acceleration is independent of size and mass of the ball

So in this case both balls will be dropped by same acceleration.

So here both balls will hit the ground at same time

4 0

3 years ago

1. A plane mirror has a surface

kenny6666 [7]

Answer:

A plane mirror is a mirror with a flat (planar) reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. The angle of the incidence is the angle between the incident ray and the surface normal (an imaginary line perpendicular to the surface).

3 0

3 years ago

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A sodium vapor lamp omit waves with the frequency of 5.26x10^14 Hz. What is the wavelength of light?

koban [17]

Answer:

$\lambda=5.70\times 10^{-7}\ m$