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Gemiola [76]
4 years ago
12

A force F acts on an object undergoing a displacement s, the force being oriented at an angle θ with respect to the displacement

. Which one of the following correctly describes ALL of the circumstances under which the work done by the force is zero?
Physics
1 answer:
Komok [63]4 years ago
7 0

Answer:

a) The force is zero, or the displacement is zero, or the angle is 180 degrees

b) The kinetic energy, speed, and velocity of the particle change.

c) W1 = - W2

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If the loading is 0.4, the coinsurance rate is 0.2, the number of units of medical care is 100, and the number of units of medic
s344n2d4d5 [400]

Answer:

72  is the premimum of the insurance.

Explanation:

Below is the given values:

The loading = 0.4

Coinsurance rate = 0.2

Number of units = 100

Total number of units = 100 * 0.4 = 40

Remaining units = 60 * 0.2 = 12

Add the 60 and 12 values = 60 + 12 = 72

Thus, 72  is the premimum of the insurance.

8 0
3 years ago
Please help <br><br>formula to calculate equivalent resistance​
azamat

Answer:

(Equation 10.3. 2): RS=R1+R2+R3+R4+R5=20Ω+20Ω+20Ω+20Ω+10Ω=90Ω

6 0
3 years ago
A sound wave has a frequency of 645 Hz in air
rodikova [14]

Answer:

-14.2^{\circ}C

Explanation:

First of all, we can find the speed of the sound wave, which is given by:

v=f \lambda

where

f = 645 Hz is the frequency

\lambda=0.5 m is the wavelength

Substituting,

v=(645 Hz)(0.5 m)=322.5 m/s

Now we can find the temperature of the air by using the following relationship:

v = 331 m/s + 0.6 T

where T is the temperature in Celsius degrees. Since we know v = 322.5 m/s, we can re-arrange the formula to find the temperature:

T=\frac{v-331 m/s}{0.6}=\frac{322.5 m/s-331 m/s}{0.6}=-14.2^{\circ}C

7 0
3 years ago
What do period and frequency both describe?
Natasha2012 [34]
Frequency refers to how often something happens. Period refers to the time it takes something to happen. Frequency is a rate quantity. Period is a time quantity. Frequency is the cycles/second
8 0
3 years ago
A boat is traveling at a speed of 36 km/h. It has to travel a distance of 210 km. How long will it take?
oksian1 [2.3K]

Answer:

If the boat is going 36 km/h, then it will take about 5.8 hours to travel a distance of 210 km/h.

Explanation:

To calculate time, you have to divide the distance by the speed.

In this case, we take 210 and divide it by 36. The answer you will get is 5.83...

6 0
3 years ago
Read 2 more answers
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