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Cloud [144]
3 years ago
12

4. A hiker leaves camp and using a compass walks 4 km East, 6 km South, 3 km East, 5 km North, 10 km West, 8 km North and 3 km S

outh. What is his total displacement?
Physics
1 answer:
PSYCHO15rus [73]3 years ago
7 0

Answer:

Because the hiker walked directly west and then directly north the two legs of the hike forms a right triangle. Therefore we can use the Pythagorean Theorem to solve this problem.

 

c=5

The hiker is 5km from camp and should head in a generally south-east direction

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A glass falls off a shelf. How fast is the glass moving after 0.4 seconds?
tresset_1 [31]

On Earth, gravity increases the speed of a falling object by about 9.8 m/s
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In 0.4 second, its speed increases by (0.4 x 9.8) = 3.92 m/s.

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started from zero speed, and its speed after 0.4 second is 3.92 m/s.

Its velocity is 3.92 m/s downward.


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3 years ago
A fixed 15.3-cm-diameter wire coil is perpendicular to a magnetic field 0.77 T pointing up. In 0.20 s , the field is changed to
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We have given diameter of wire d = 15.3 cm

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Time for change in magnetic field dt = 0.26 sec

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5 0
3 years ago
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