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Zarrin [17]
3 years ago
12

A moving object has a kinetic energy of 150J. what is the mass of the object if its momentum is 25kgm/s

Physics
1 answer:
Umnica [9.8K]3 years ago
8 0

Answer:

A

hooopppee itt heeelppss

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A 5-turn square loop (10 cm along aside, resistance = 4.0 ) is placed in a magnetic field that makes an angle of30o with the pla
andreev551 [17]

Answer:

Explanation:

Area A of the coil = .1 x .1 = .01 m²

no of turns n = 5

magnetic field B = .5 t²

Flux  Φ perpendicular to plane passing through it.= nBA sin30

rate of change of flux

dΦ/dt = nAdBsin30 / dt

= nA d/dt (.5t²x .5 )

= nA x 2 x .25 x t

At t = 4s

dΦ/dt = nA x 2

= 5x .01 x 2

= .1

current = induced emf / resistance

= .1 / 4

= .025 A

= 25 mA.

4 0
3 years ago
A 46.0-kg box is being pushed a distance of 8.80 m across the floor by a force P whose magnitude is 171 N. The force P is parall
dolphi86 [110]

Answer:

a) 1504.8 J

b) 991.76 J

c) 0J

d) 0J

Explanation:

(a) The work done by the force P on the box is given by the following formula:

W_P=Px

P: applied force = 171N

x: distance in which the for P is applied = 8.80m

you replace the values of P and x and obtain:

W_P=(171N)(8.80m)=1504.8J

(b) The work don by the friction force is:

W_f=F_fx=\mu N x=\mu Mg x

μ = coefficient of kinetic friction = 0.250

M: mass of the box = 46.0kg

g: gravitational constant = 9.8 m/s^2

W_f=(0.250)(46.0kg)(9.8m/s^2)(8.80m)=991.76J

(c) The Normal force is

N=Mg=(46.0kg)(9,8m/s^2)=450.8N

but this force does not do work on the box because the direction is perpendicular to the direction of the force P.

W_N=0J

(d) the same as before:

W_g=0J

8 0
3 years ago
How far does a car travel in 0.75 h if it is moving at a constant speed of 88 km/h?
Novay_Z [31]
V=d/t
88 km/h = distance/ .75 h .       multiply .75 by both side
66 km
Hope it helps
3 0
3 years ago
Read 2 more answers
Mass 2 has a mass of 1.00 kg. Mass 2 rolls
yaroslaw [1]

Answer:

please take clean picture

3 0
2 years ago
7. The Voyager 1 space probe was launched in the 1970's and is now the furthest
NikAS [45]

Answer:

v = 16.98 km/s

Explanation:

Given that,

Distance, d = 4500 km

Time, t = 265 s

We need to find its average speed. The total distance covered divided by total time taken is called average speed of an object. So,

v=\dfrac{4500\ km}{265\ s}\\\\=16.98\ km/s

So, the average speed is 16.98 km/s.

6 0
3 years ago
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