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MA_775_DIABLO [31]

3 years ago

15

A bird flies due north with a speed of 15 m/s relative to the air. The air moves due west with a speed of 11 m/s relative to the

ground. What is the robin's speed relative to the ground?

1 answer:

Aleksandr [31]3 years ago

4 0

Answer:

I'm not sure if the directions affect the speed tho

but I think it's 4? cause it's the speed relative to the ground

hope this helps:))

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A combined circuit has two resistors in series (27.5 ohms and 33.0 ohms) and another in parallel (22.0 ohms). If the power sourc

Dafna1 [17]

R 1,2 = 27.5 + 33.0 = 60.5 Ohms
1/ R 1,2,3 = 1/ 60.5 + 1 / 22 = 82.5 / 1331
R 1, 2, 3 = 1331 / 82.5 = 16.13 Ohms
I = U / R
I = 9 V / 16.13 Ohms = 0.557 A ≈ 0.56 A
Answer: C ) 0.56 Amps

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3 years ago

which will have longer shadow: ben whose height is 5 feet tall and 2 inches or his brother mike who is 6 feet and 2 inches when

geniusboy [140]

Answer: I believe his brother, Mike, who is 6'2, will have the longer shadow.

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2 years ago

Which type of evidence was used to tie Ted Bundy to the murder of Lisa Levy?

Elodia [21]

Explanation:

identified by one of the Chi Omega survivors as the assailant, and hair and fiber evidence tied him to the Leach murder. His trial for the Florida attacks in June 1979 was the first-ever nationally televised trial in the United States.

6 0

2 years ago

Estimate the kinetic energy (in GJ) of a 98,000 metric ton aircraft carrier moving at a speed of at 32 knots. You will need to l

kiruha [24]

Answer:

K = 13.276 GJ

Explanation:

Given:

Mass of the aircraft (m) = 98,000 metric ton

Speed of the aircraft (v) = 32 knots

Kinetic energy of the aircraft (K) = ?

We know that,

1 metric ton = 1000 kg

∴ 98,000 metric ton = 98,000 × 1000 = 9.8 × 10⁷ kg

Also, 1 knot = 1 nautical mile per hour

So, 32 knots = 32 nautical miles per hour

Converting nautical miles per hour to meter per second using the following conversions, we get:

1 nautical mile = 1852 m

1 hour = 3600 s

Therefore, 1 nautical mile per hour = $\frac{1852}{3600}\ m/s$

So, 32 nautical miles per hour = $32\times \frac{1852}{3600}=16.46\ m/s$

Therefore, the mass and speed of the aircraft are:

$m=9.8\times 10^{7}\ kg\\v=16.46\ m/s$

Now, kinetic energy is given as:

$K=\frac{1}{2}mv^2$

Plug in the above values and solve for 'K'. This gives,

$K=\frac{1}{2}\times 9.8\times 10^7\times (16.46)^2\\\\K=4.9\times 270.9316\times 10^7\ J\\\\K=13.276\times 10^2\times 10^7\ J\\\\K=13.276\times 10^9\ J$

Now, we know that, 1 GJ = 10⁹ J

Therefore, the value of 'K' in terms of GJ is given as:

K = 13.276 GJ

8 0

3 years ago

Why does an object’s mass and speed cause it to have kinetic energy?

BabaBlast [244]

The formula for kinetic energy is ...

K = (.5)(M)(V^2)

As you can see, mass and speed are in the equation, so it means it directly impacts the magnitude of kinetic energy. Also kinetic energy is energy in motion. If it's moving, it has kinetic energy.

6 0

3 years ago