Quick does the watermelon have more or less mass then the 2kg bottle?

A charge feels a 7.89 x 10-7 N force when it moves 2090 m/s at a 29.4° angle to a 4.23 x 10-3 T magnetic field. What is the amou

tamaranim1 [39]

We have that the amount of the charge q is

$q=1.8*10^{-7}$

From the Question we are told that

Force $F=7.89 x*10^{-7}$

Velocity $V=2090m/s$

Angle $\theta=29.4$

Magnetic field $B=4.23 * 10^{-3} T$

Generally, the equation for Force F is mathematically given by

$F=qVBsin\theta\\\\q=\frac{F}{VBsin\theta}$

$q=\frac{7.89 x*10^{-7}}{4.23 * 10^{-3} T*sin29.4*2090m/s}$

$q=1.8*10^{-7}$

In conclusion

The amount of the charge q is

$q=1.8*10^{-7}$

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6 0

3 years ago

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Brad is working on a speed problem in physics class. The problem tells him that a girl runs from her house to the park 0.05 km a

Dmitriy789 [7]

It is corecct becasue it 10 s more added from 0.05

7 0

3 years ago

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A fast moving vehicle travelling at a speed of 25.4 m/s comes up behind another vehicle which is

ale4655 [162]

Answer:

a = 6.1 m / s²

Explanation:

For this kinematics exercise, to solve the exercise we must set a reference system, we place it in the initial position of the fastest vehicle

Let's find the relative initial velocity of the two vehicles

v₀ = v₀₂ - v₀₁

v₀ = 25.4 - 13.6

v₀ = 11.8 m / s

the fastest vehicle

x = v₀ t + ½ a t²

The faster vehicle has an initial speed relative to the slower vehicle, therefore it is as if the slower vehicle were stopped, so the distance that must be traveled in a fast vehicle to reach this position is

x = 11.4 m

let's use the expression

v² = v₀² - 2 a x

how the vehicle stops v = 0

a = v₀² / 2x

a = $\frac{11.8^2}{2 \ 11.4}$

a = 6.1 m / s²

this velocity is directed to the left

8 0

3 years ago

If the force of gravity suddenly stopped acting on the planets, they would

lorasvet [3.4K]

Answer:c

Explanation:

If the Force of gravity suddenly stops acting on Planets then Planets would continue to move straight in the initial direction.

Gravity constantly acts on Planets to change their trajectory each instant thus in absence of it if a planet is moving in a circular path then it would follow the path of the tangent to the circular path as gravity force is absent to change its trajectory.

4 0

3 years ago

A crate weighing 1000 Newton's needs to be lifted at a constant speed from the ground to a loading dock 1.5 meters high in 5.0 s

miskamm [114]

Answer:

the Power required is 300 W

Explanation:

We know that the definition of work is given by the following expresion:

$W=F*d$