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makkiz [27]
3 years ago
11

What is the mass of a cow moving at a velocity of 0.5 m/s with 25J of kinetic energy? Show work

Physics
2 answers:
Karo-lina-s [1.5K]3 years ago
5 0

Answer:

200 kg

Explanation:

Free_Kalibri [48]3 years ago
3 0

Answer:

m= 50

Explanation:

m=f/a    this is the formula for mass

m= 25/0.5    you substitute the numbers with their variables   they you divide them to get the mass

m= 50

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If R1 is 2 ohms and R2 is 3 ohms and R3 is 5 ohms...what is total resistance?
OLEGan [10]

Answer:

10 ohm

Explanation:

Since the resistors are arranged in series, their total resistance is their sum.

Hence, Total R = 2+3+5 = <u>10 ohm</u>

5 0
3 years ago
You toss a rock of mass mm vertically upward. Air resistance can be neglected. The rock reaches a maximum height hh above your h
skad [1K]

Answer:

The speed of the rock when it is at height h/4 is \dfrac{\sqrt{3gh} }{2}.

Explanation:

At maximum height the final velocity of the rock is equal to 0. Let u is the initial velocity of the rock. Using the conservation of energy to find it as :

u^2=2gh.......(1)

We need to find the speed of the rock when it is at height h/4. Let v' is the speed. Using 3rd equation of motion as :

v'^2=u^2+2as

here a = -g and s = h/4

v'^2=u^2-2g\times \dfrac{h}{4}

Using equation (1) :

v'^2=(2gh)-2g\times \dfrac{h}{4}\\\\v'^2=\dfrac{3gh}{4}\\\\v'=\dfrac{\sqrt{3gh} }{2}

So, the speed of the rock when it is at height h/4 is \dfrac{\sqrt{3gh} }{2}. Hence, this is the required solution.

3 0
3 years ago
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A short term affect of anorexia might include wight loss
Serggg [28]
Is there a question....
3 0
3 years ago
If 1 foot is 30.28 centimeters.how many cm is 130 feet
uranmaximum [27]

Answer:3,936.4

Explanation:

If 1 foot is 30.28 centimeters multiply 30.28 by 130

6 0
3 years ago
A large crate is suspended from the end of a vertical rope. Is the tension in the rope greater when the crate is at rest or when
choli [55]

Answer:

Part a)

the tension force is equal to the weight of the crate

Part b)

tension force is more than the weight of the crate while accelerating upwards

tension force is less than the weight of crate if it is accelerating downwards

Explanation:

Part a)

When large crate is suspended at rest or moving with uniform speed then it is given as

F_t - mg = ma

here since speed is constant or it is at rest

so we will have

a = 0

F_t = mg

so the tension force is equal to the weight of the crate

Part b)

Now let say the crate is accelerating upwards

now we can say

F_t - mg = ma

F_t = mg + ma

so tension force is more than the weight of the crate

Now if the crate is accelerating downwards

F_t - mg = -ma

F_t = mg - ma

so tension force is less than the weight of crate if it is accelerating downwards

4 0
3 years ago
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