A man has a power of 90 W and mass 60 kg runs up a staircase in 40 s. If each staircase is 20cm high find the number of steps? (
grade 9 physics-GRAVITATION)
1 answer:
I depends on three area of the staircase
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D. velocity
Velocity depends on speed and direction
Answer:
imma have to say C I'm not sure tho
I believe a but none sound like they’d build a laser
No. because the weight is the same. no m9re water displacement
From your choices which are
A. 5.6 × 10-12 joules
B. 1.3 × 10-12 joules
C. 2.3 × 10-12 joules
D. 3.3 × 10-10 joules
E. 5.6 × 10-10 joules
The answer is 3.3 × 10-10 joules. The answer is letter c.
