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3 years ago

W=225 J P=25 W t=? what's T

Physics

1 answer:

Mama L [17]3 years ago

5 0

Explanation:

p=w/t

t=w/p

t=225/25=9seconds

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will the value of g be affected by the radius of the earth? consider the real shape of the earth. compare the acceleration due t

sp2606 [1]

Answer:

Yes, the value of g affected by the radius.

Explanation:

The formula for the force of gravity of 2 objects is

$F_{gravity} = G\frac{m_{1}m_{2}}{r^2}$ , where m1 and m2 are the masses of the 2 objects, r is the radius, and G is the gravitational constant, which is approximately $6.67 \cdot 10^{-11}$ .

Therefore, as the radius if bigger, the force of gravity is going to be smaller exponentially.

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4 years ago

A physics book slides off a table at 1.25ms and hits the ground after 0.4s

tresset_1 [31]

Answer:

Whats the question here?

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3 years ago

A light bulb in a camper’s flashlight is labeled 4.1 V, 0.40 A. Find the equivalent current if three of these light bulbs are co

Gnesinka [82]

Explanation:

first rule of parallel circuits : the voltage is the same in the whole circuit, no matter where we measure.

so, we have 1.5V at every bulb.

second rule of parallel circuits : the total current is the sum of the individual branch currents.

so, if the battery really allows it, then we have 3 times 0.4 A = 3×0.4 = 1.2 A as current in the circuit.

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2 years ago

A block of mass 2kg is acted upon by two forces: 3N (directed to the left) and 4N (directed to the right). What can you say abou

Marizza181 [45]

Answer:

The block will be move in to right side.

Explanation:

Given that,

Mass of block = 2 kg

First force = 3 N

Second force = 4 N

We need to calculate the acceleration

For first force,

Using newton's second law

$F= ma$

$a = \dfrac{F}{m}$

Put the value into the formula

$a=\dfrac{3}{2}$

$a=1.5\ m/s^2$

We need to calculate the acceleration

For second force,

$a=\dfrac{4}{2}$

$a=2\ m/s^2$

So, we can say that the block will be move to right side because the acceleration is maximum in to right side.

Hence, The block will be move in to right side.

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3 years ago

Tiana jogs 1.5 km along a straight path and then turns and jogs 2.4 km in the opposite direction. She then turns back and jogs 0

vichka [17]

Answer:

Distance: 4.6km Displacement= -0.2km

Explanation:

Total distance: 1.5+2.4+0.7= 4.6 km

Displacement: 1.5-2.4+0.7= -0.2km

The displacement may also be 0.2km, it just depends on if it wants it negative or not.

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4 years ago