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tia_tia [17]
3 years ago
13

A spacecraft built in the shape of a sphere moves past an observer on the Earth with a speed of 0.500c. What shape does the obse

rver measure for the spacecraft as it goes by?
Physics
1 answer:
alexandr402 [8]3 years ago
3 0

Answer:

Given the speed of the 0.500c, the spacecraft is spherical.

Explanation:

The length of an object is contracted in the direction of the motion. It can be visualize that if a spherical body is contracted along a particular axial direction then the shape of the spherical body is seem to be in shape of a pillow, similarly the spherical spacecraft moves away and seems to be contracted along the direction of motion, so it becomes a round shape flattened along the direction of motion.

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Which is an example of an exothermic process?
4vir4ik [10]

Answer:

i think answer is c

Explanation:

as formation water from steam condensed release heat

else all need heat

5 0
3 years ago
The left face of a biconvex lens has a radius of curvature of magnitude 11.7 cm, and the right face has a radius of curvature of
SIZIF [17.4K]

Answer:

Explanation:

R1 = + 11.7 cm

R2 = - 18.7 cm

n = 1.52

(a) Use lens maker formula

\frac{1}{f}=\left ( n-1 \right )\left ( \frac{1}{R_{1}}-\frac{1}{R_{2}} \right )

\frac{1}{f}=\left ( 1.52-1 \right )\left ( \frac{1}{11.7}}+\frac{1}{18.7} \right )

\frac{1}{f}=\frac{0.52\times 30.4}{218.79}

f = 13.84 cm

(b)

R1 = + 18.7 cm

R2 = - 11.7 cm

n = 1.52

(a) Use lens maker formula

\frac{1}{f}=\left ( n-1 \right )\left ( \frac{1}{R_{1}}-\frac{1}{R_{2}} \right )

\frac{1}{f}=\left ( 1.52-1 \right )\left ( \frac{1}{18.7}}+\frac{1}{11.7} \right )

\frac{1}{f}=\frac{0.52\times 30.4}{218.79}

f = 13.84 cm

5 0
3 years ago
Technological advances are now making it possible to link visible-light telescopes so that they can achieve the same angular res
leonid [27]

Answer: The angle of resolution =47.05°

Explanation:

The angle of resolution represents the resolve power and precision of optical instruments such as the eye, camera and e en a microscope. It is given by the equation:

Sin A = 1.220(W÷D)

Sin A= 1.220(300÷500)

Sin A = 1.220(0.6)

Sin A = 0.732

A= Sin^-1 0.732

A= 47.05°

4 0
3 years ago
Read 2 more answers
4. What is the acceleration of a rock if the net
HACTEHA [7]

Answer:

0.75 m/s²

Explanation:

Newton's second law:

∑F = ma

3 N = (4 kg) a

a = 0.75 m/s²

8 0
4 years ago
A 100 Kg man is diving off a 50 meter cliff. What is his kinetic energy when he is 20 meters from the water?
iren2701 [21]

Answer:

K.E=29.403125J

Explanation:

From the question we are told that

Mass M=100

Height 50-20=30m

Generally the equation for velocity before impact is is is mathematically given by

v=\sqrt{2gh}

v=\sqrt{2*9.8*30}

v=24.25

Generally the equation for Kinetic Energy is is mathematically given by

K.E=\frac{1}{2}mv^2

K.E=\frac{1}{2}*100*(24.25)^2\\

K.E=29403.125J

K.E=29.403125J

8 0
3 years ago
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