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devlian [24]
3 years ago
12

If vector A= aj^ and vector B = bj^, then vector A×B is equal to​

Physics
1 answer:
Alexus [3.1K]3 years ago
7 0

Answer:

0 because j×j =0

Explanation:

so a×b is 0

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Sedbober [7]
The displacement is the area under the graphs. C is 5x2=10m and D is 0.5 x 2.5 x 2.5 = 6.25m
3 0
3 years ago
1. Amy is riding on a train. She wants to sit at the front of the train for a better view, so she gets up to change her seat. Ju
photoshop1234 [79]

Answer:

she'd get thrown forward

Explanation:

3 0
3 years ago
On a vacation flight, you look out the window of the jet and wonder about the forces exerted on the window. Suppose the air outs
user100 [1]

Answer:

A) \Delta P =  14512.5 Pa = 14.512 kPa

B) F = 1632.65 N

Explanation:

Given details

outside air speed is given as v_2 = 150 m/s

since inside air is atmospheric , v_1 = 0 m/s

a) By using bernoulli equation between outside and inside of flight

P_1 + \frac{1}{2} \rho v_1^2 + \rho gh = P_2 + \frac{1}{2} \rho v_2^2 + \rho gh

\Delta P = \frac{1}{2} \rho v_2^2 - \frac{1}{2} \rho v_1^2

\Delta P = \frac{1}{2} \rho[ v_2^2 -v_1^2]

\Delta P = \frac{1}{2} 1.29 [ 150^2 - 0^2]

\Delta P =  14512.5 Pa = 14.512 kPa

b) force exerted on window

Area of window  = 25\times 45 = 1125 cm^2 = 0.1125 m^2

We know that force is given as

F = P\times A

F = 14512.5 \times 0.1125

F = 1632.65 N

5 0
4 years ago
What is the critical angle of light traveling from benzene (n=1.501) into air?
Taya2010 [7]
The critical angle formula should be: sin^-1(1/n) 

 where "n" is 1.501 into the air

<span>The critical angle of light travelling from benzene, happens because the larger angles of incidence from the inside of the benzene has experienced the total internal reflection. </span>


4 0
4 years ago
Mike takes his temperature with a thermometer three times over a 20 minute period and observes the following measurements: 98, 1
Fudgin [204]

Answer:

Available options are;

A. validity; high

B. variability; low

C. reliability; low

D. reactivity; high

Answer is C. reliability; low

Explanation:

Normal body temperature is considered to be 37°C (98.6°F); however, a wide variation is seen. Among normal individuals, mean daily temperature can differ by 0.5°C (0.9°F), and daily variations can be as much as 0.25 to 0.5°C. So we can see that the 98 to 106 to 89 degrees shows that the thermometer is not reliable.

7 0
3 years ago
Read 2 more answers
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