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konstantin123 [22]
3 years ago
12

Parachutists are hurt when jumping on the moon's surface,why?​

Physics
2 answers:
9966 [12]3 years ago
7 0

Answer:

It's all about Gravity. When parachutists jump and open the parachute, the parachute increases the air resistance due to which acceleration due to gravity decreases, thus parachutists land safely without getting hurt.

Bishnu Gupta3 years ago
0 0

It is because of no athmosphere

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Estimate the monthly cost of using a 700-W refrigerator that runs for 10 h a day if the cost per kWh is $0.20.
slamgirl [31]

Power consumed by the refrigerator is given as

P = 700 W

Now if refrigerator is used 10 h a day then total usage of refrigerator for 1 month will be given as

t = 10 * 30 = 300 h

now the total energy consumed in one month is given as

E = P * t

E = 700 * 300

E = 210000

E = 210 kWh

now it is given that cost of one kWh is $0.20

then total cost of one month is given as

C = $0.20 * 210

C = $42


7 0
3 years ago
A jogger jogs around a circular track with a diameter of 275 m in 14.0 minutes. what was the jogger's average speed in m/s?
Pie

The jogger's average speed 1.03 m/s

<h3>The Speed and the Velocity of a Particle in a Circle</h3>

The speed of a particle is a circle will always be constant while the velocity will not. That is, velocity varies.

Given that a jogger jogs around a circular track with a diameter of 275 m in 14.0 minutes. First convert the minutes to seconds

Given parameters are;

  • Diameter = 275 m
  • Radius r = D/2 = 137.5 m
  • Time t = 14 minutes = 14 x 60s = 840 s

Speed V = 2πr ÷ t

V = ( 2 × π × 137.5 )  ÷ 840

V = 863.9 / 840

V = 1.028 m/s

Therefore, the jogger's average speed 1.03 m/s approximately

Learn more about Circular Motion here: brainly.com/question/20905151

#SPJ1

5 0
2 years ago
The hindenburg zeppelin contained 200,000 m^3 of hydrogen, with a density of 0.0899 kg/m^3. What is the mass of the hydrogen?
oksian1 [2.3K]

d=m/v

0.0899=m/200000

or,0.0899*200000=m

m=17980

6 0
3 years ago
Read 2 more answers
Two 1.1 kg masses are 1 m apart (center to center) on a frictionless table. Each has +10 JC of charge. What is the initial accel
sweet-ann [11.9K]

Answer:

acceleration = 0.8181 m/s²

Explanation:

given data

mass = 1.1 kg

apart d = 1 m

charge q = 10 μC

to find out

What is the initial acceleration

solution

we know that acceleration is

acceleration = \frac{force}{mass}   .................1

here force = k \frac{q1q2}{r^2}

here q1 q2 is charge and r is distance and Coulomb constant k = 9 × 10^{9} Nm²/C²

force = 9*10^{9} \frac{(10*10^{-6})^2}{1^2}

force = 0.9 N

so  from equation 1

acceleration = \frac{0.9}{1.1}

acceleration = 0.8181 m/s²

6 0
3 years ago
Which is colder, 0 degree C or 20 degrees F?
il63 [147K]
20 degrees F! 0 degrees C is equivalent to 32 degrees F, so 20 degrees F is colder.
7 0
3 years ago
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