<span>An automobile with a mass of 1450 kg is parked on a moving flatbed railcar; the flatbed is 1.5 m above the ground. The railcar has a mass of 38,500 kg and is moving to the right at a constant speed of 8.7 m/s on a frictionless rail...
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I believe that it is a boy but if they would like to be classified as a girl or a boy their decision needs to be respected
Answer:
The effects that certain frequencies of EMR have when absorbed by matter is explained below in complete detail.
Explanation:
Electromagnetic radiation of distinct frequencies associates with material adversely. ... Gamma rays, though commonly of somewhat greater frequency than X rays have the equivalent creation. When the power of gamma rays is consumed in material, its influence is practically indistinguishable from the outcome generated by X rays.
<span> it CAN be negative if you consider the velocity as "vector". It CANNOT if you consider the "numerical" velocity..</span>
Answer:
The weight that will balance the meter stick at 70 cm mark is 35N
Explanation:
Given;
first weight at 15 cm mark, W₁ = 20 N
second weight at 70 cm mark, W₂ = ?
A sketch of the question in diagram form;
The center of gravity of the meter stick is 50 cm
15cm 50cm 70cm
0---------------------------------------Δ------------------------------------------100cm
↓ ↓
20N W₂
<------------------>|<--------------->
35cm 20cm
Take moment about the pivot;
Clockwise moment = anticlockwise moment
W₂(20cm) = 20N(35 cm)
W₂ = (20 x 35) / (20)
W₂ = 35 N
Therefore, the weight that will balance the meter stick at 70 cm mark is 35N