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AfilCa [17]
3 years ago
9

If an astronaut has a mass of 80 kg when measured on Earth. What is the astronaut’s weight on Mars where the acceleration due to

gravity on Mars is 3.8 m/s/s?
Question 6 options:

Zero Newtons because objects in space are weightless


784 N


304 N


80 N
Physics
1 answer:
AlekseyPX3 years ago
6 0

Answer:

784 ni

Explanation:

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If the magnetic field strength is found to be zero between the two wires at a distance of 3.0 cm from the first wire, what is th
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Answer: The magnitude of the current in the second wire 2.67A

Explanation:

Here is the complete question:

Two straight parallel wires are separated by 7.0 cm. There is a 2.0-A current flowing in the first wire. If the magnetic field strength is found to be zero between the two wires at a distance of 3.0 cm from the first wire, what is the magnitude of the current in the second wire?

Explanation: Please see the attachments below

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3 years ago
Where does the majority of the mass of an atom come from
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2 years ago
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A jet is travelling at a speed of 1200 km/h and drops cargo from a height of 2.5 km above the ground Calculate the time it takes
OLEGan [10]

a) Time of flight: 22.6 s

To calculate the time it takes for the cargo to reach the ground, we just consider the vertical motion of the cargo.

The vertical position at time t is given by

y(t) = h +u_y t - \frac{1}{2}gt^2

where

h = 2.5 km = 2500 m is the initial height

u_y = 0 is the initial vertical velocity of the cargo

g = 9.8 m/s^2 is the acceleration of gravity

The cargo reaches the ground when

y(t) = 0

So substituting it into the equation and solving for t, we find the time of flight of the cargo:

0 = h - \frac{1}{2}gt^2\\t=\sqrt{\frac{2h}{g}}=\sqrt{\frac{2(2500)}{9.8}}=22.6 s

b) 7.5 km

The range travelled by the cargo can be calculated by considering its horizontal motion only. In fact, the horizontal motion is a uniform motion, with constant velocity equal to the initial velocity of the jet:

v_x = 1200 km/h \cdot \frac{1000 m/km}{3600 s/h}=333.3 m/s

So the horizontal distance travelled is

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t = 22.6 s

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7 0
3 years ago
A cannon fires a 0.652 kg shell with initial
laila [671]
 Mass have no effect for the projectile motion and  u want to know the  height "h"   
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horizontal component of velocity = 12 cos 61
now for the vertical motion ;               
             S = ut + (1/2) at^2
where
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u = initial vertical component of velocity 
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6 0
3 years ago
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An object takes 5 seconds to move 2 meters upward. How fast did it go?
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Answer:

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8 0
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