Answer:
2211.4 m/s
Explanation:
We are given that
Mass of bullet,m=2.6 g=
1 kg=
Mass of pendulum,M=3.6 kg
Vertical distance,y=13 cm=
1 m=100 cm
We have to find the bullet's initial speed.
Kinetic energy of bullet=P.E
Where
According to law of conservation of momentum
Hence, the bullet's initial speed=2211.4 m/s
Answer:
Heat capacity, Q = 781.74 Joules
Explanation:
Given the following data;
Mass = 12g
Initial temperature = 28.3°C
Final temperature = 43.87°C
Specific heat capacity of water = 4.184J/g°C
To find the quantity of heat needed?
Heat capacity is given by the formula;
Where;
Q represents the heat capacity or quantity of heat.
m represents the mass of an object.
c represents the specific heat capacity of water.
dt represents the change in temperature.
dt = T2 - T1
dt = 43.87 - 28.3
dt = 15.57°C
Substituting into the equation, we have;
Q = 781.74 Joules
Answer:
True.
The day a huge asteroid strikes the earth will likely be a weekday.
Explanation:
Mathematically, there are 5 weekdays in the week and there are only 2 weekend days.
Total number of days in a week = 7
Since, the asteroids can hit on any day,
The probability of the asteroid hitting on a weekend day = (2/7) = 0.2857
The probability that an asteroid hitting on a weekday = (5/7) = 0.7143.
So, by the virtue of the probability of the asteroid hitting on a weekday or on a weekend day, the asteroid is more likely to hit on a weekday as
P(weekday) > P(weekend)
0.7143 > 0.2857.
Hope this Helps!!!
The maximum amount of work that the hammer can do while falling to the ground is equal to its variation of gravitational potential energy, which is given by:
where m is the mass of the hammer, g is the gravitational acceleration, h is the variation in altitude of the hammer.
Plugging the data of the problem inside the equation, we find
Answer:
Explanation:
You didn't last any of the variables. You have to list the variables to tell which are which.