3 years ago

What is the name and degree of the line of longitude that passes through greenwich england

Physics

2 answers:

Alborosie3 years ago

8 0

Answer: The name is prime meridian and the degree is

0 degrees

Explanation:

zlopas [31]3 years ago

5 0

Answer:

The name of the line of longitude that passes through Greenwich, England is called the "Prime Meridian"

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A box is held at rest by two ropes that form 30° angles with the vertical. The tension T in either rope is 42 N. What is the wei

iragen [17]

<h3><u>Answer;</u></h3>

= 73 N

<h3><u>Explanation</u>;</h3>

Using the formula

2 T cos(30°) = w

Where; T is the tension on each string, while w is the weight of the box given by mg

Therefore;

W = 2Tcos 30°

= 2 × 42 cos 30°

= 84 cos 30°

= 72.74

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4 years ago

A taxi is travelling at 15 m/s. Its driver accelerates with

Hitman42 [59]

If we assume that the acceleration is constant, we can use on the kinematic equations:

Vf = Vi + a*t = 15 + 3*4 = 27 m/s

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3 years ago

2. Suppose your car has a maximum braking acceleration of -5 m/s2. Calculate the stopping distance for an initial speed of 25 m/

Hitman42 [59]

Answer:

s=62.5m

Explanation:

Use the equation v²=u²+2as, where v is the final velocity, u is the initial velocity, a is the acceleration and s is the distance.

0²=25²+2(-5)s

10s=625

s=62.5m

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3 years ago

An electric field of 2.09 kV/m and a magnetic field of 0.358 T act on a moving electron to produce no net force. If the fields a

My name is Ann [436]

Answer:

The velocity is $v = 5838 \ m/s$

Explanation:

From the question we are told that

The electric field is $E = 2.09 kV/m = 2.09 *10^{3} \ V/m$

The magnetic field is $B = 0.358 \ T$

Generally the force experienced by the electron due to the magnetic field is

$F_m = qvB$

Generally the force experienced by the electron due to the electric field is

$F_e = qE$

Since from the question the net force is zero then

$F_e = F_m$

=> $v = \frac{E}{B}$

Substituting values

$v = \frac{2.09*10^{3}}{0.358 }$

$v = 5838 \ m/s$

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3 years ago

What does the atomic mass number represent

UNO [17]

Answer:

the number of neutrons and protons in an atom

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3 years ago