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kaheart [24]
3 years ago
7

What is the speed of an object that moves from 70 m to 68 m in 14 s?

Physics
1 answer:
PtichkaEL [24]3 years ago
5 0
Speed = m/s
Velocity can be negative, but speed cannot.

70 - 68 = 2
2/14 = 0.143 m/s
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How much work is done by you when you push car a distance of 10 m while exerting a horizontal
Igoryamba

W = F x d

F: 450 N

d = 10 m

plug your variables into the equation to get W = 450N x 10m

7 0
3 years ago
Suppose you have a pendulum clock which keeps correct time on Earth(acceleration due to gravity = 1.6 m/s2). For ever hour inter
kaheart [24]

The moon clock is A) (9.8/1.6)h compared to 1 hour on Earth

Explanation:

The period of a simple pendulum is given by the equation

T=2\pi \sqrt{\frac{L}{g}}

where

L is the length of the pendulum

g is the acceleration of gravity

In this problem, we want to compare the period of the pendulum on Earth with its period on the Moon. The period of the pendulum on Earth is

T_e=2\pi \sqrt{\frac{L}{g_e}}

where

g_e = 9.8 m/s^2 is the acceleration of gravity on Earth

The period of the pendulum on the Moon is

T_m=2\pi \sqrt{\frac{L}{g_m}}

where

g_m = 1.6 m/s^2 is the acceleration of gravity on the Moon

Calculating the ratio of the period on the Moon to the period on the Earth, we find

\frac{T_m}{T_e}=\frac{g_e}{g_m}=\frac{9.8}{1.6}

Therefore, for every hour interval on Earth, the Moon clock will display a time of

A) (9.8/1.6)h

#LearnwithBrainly

6 0
3 years ago
What type of balls sink and why?
forsale [732]
The type of balls that sink are the ones that are quite heavy because they have molecules that are dense inside of them that makes it sink. Hope it helps!!!
8 0
3 years ago
Read 2 more answers
Independent measurements of two lengths are made. The results are x=95 +- 0.1 and y=2.30+-0.02 cm
notsponge [240]
95-2.30+0.1+0.02cm =0.00089186
100m
3 0
3 years ago
if a 3.1g ring is heated using 10.0 calories, its temperatures rises 17.9C calculate the specific heat capacity of the ring
Aleksandr-060686 [28]
So what you do is you use the formula shown below:

specific heat capacity = energy required / (mass * change in temperature)
    
here ,
energy required = 10.0°C                Note that cal. is short form for °C
mass (m) = 3.1g
change in temperature (ΔT) = 17.9°C    Note that "ΔT" means change in temperature

So, plugging the values into the formula, we get,

Specific heat capacity= \frac{10}{3.1*17.9}
 
                                   = 0.1802126509
      
                                   = 0.1802 cal./g°C            <span>i rounded the answer to the                                                                                      fourth decimal point
</span>



6 0
3 years ago
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