Why is acceleration called vector quantity

1 answer:

7 0

Because it has both magnitude and direction. When an object has positive acceleration, the acceleration occurs in the same direction as the movement of the object.

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If the voltage of a circuit of 1 bulb has a resistance of 45 V and produces

Vlad1618 [11]

Answer:

The resistance of the bulb should be 90

Explanation:

OHMS Law states that the voltage(v) divided by the current (c) in amps (a) will give you your resistance

4 0

3 years ago

You stand on top a building 44 m tall with a water balloon. You drop the water balloon from rest. How fast is the balloon moving

BabaBlast [244]

Y₀ = initial position of the balloon at the top of the building = 44 m

Y = final position of the balloon at halfway down the building = 44/2 = 22 m

a = acceleration of the balloon = - 9.8 m/s²

v₀ = initial velocity of the balloon = 0 m/s

v = final velocity of the balloon = ?

using the kinematics equation

v² = v₀² + 2 a (Y - Y₀)

inserting the values

v² = 0² + 2 (- 9.8) (22 - 44)

v = 20.78 m/s

4 0

4 years ago

What is the resistance of a circuit with a voltage of 10 volts (V) and a current of 5 amps (A)? Use Ohm’s law to calculate the r

iogann1982 [59]

Answer: 2Ω

Explanation:

V = IR

R = V/I

R = 10/5 = 2Ω

Hope it helped!

5 0

3 years ago

Read 2 more answers

Problem 3 A wire of length 16cm is suspended by flexible leads above a long straight wire. Equal but opposite currents are estab

oksian1 [2.3K]

Answer:

Option B

Solution:

As per the question:

Length of the suspended wire, l = 16 cm = 0.16 m

Distance between the long wire and the suspended wire, R = 1.5 mm = 0.0015 m

Mass of the 16 cm wire, m = 0.014 kg

Now,

We know that the magnetic field due to the two parallel current carrying straight long wires with current 'I' and the separation 'R' between the wires is given by:

$B = \frac{\mu_{o}I}{2\pi R}$ (1)