Answer: The correct answer is 770 W.
Explanation:
The expression of the power in terms of potential and current is as follows;
P=VI
Here, P is the power, V is the potential and I is the current.
It is given in the problem that A coffee maker uses 7 amps of current and 110 volts.
Calculate the power of a coffee maker.
P=VI
Put I= 7 A and V= 110 V.
P=(110 V)(7 A)
P= 770 W
Therefore, the power of the coffee maker is 770 W.
c. perpendicular
b. opposite
Answer:
b.Opposite
Explanation:
Friction: It is that force which oppose the motion of any object.It is rubbing force.
We have to fill given blank space
Friction always act in opposite direction of motion.
Friction force is applied to overcome the motion of object.
If equal friction force applied in opposite direction to applied force on the object due to which an object in motion then the object will come to in rest.
When applied force is not equal to friction force then motion will not come in rest and continue move.
Hence, friction force always acts in a direction opposite to the direction of motion.
Answer : b.Opposite
B. negative acceleration
C. no acceleration
D. velocity
Answer:
31,556,736 seconds
Explanation:
The period of Earth's orbit around the Sun, T = (365 + 1/4) days (three hundred and sixty five and a quarter days
The period of Earth's orbit around the Sun in seconds is given by converting, T = into seconds as follows;
There are 60 seconds per minute, 60 minutes in each hour, 24 hours within each day, therefore, we get;
T = ×60 sec/min × 60 min/hr. × 24hr/day = 31,556,736 seconds
Answer:
Increasing the pitch of a note on the piano means you make the note higher
Answer:
Vf = 34.3 m/s
1st equation of motion was used to solve.
Explanation:
In order to find the final speed of the cow, when it hits the bushes, we can use first equation of motion:
Vf = Vi + gt
where,
Vf = Final Velocity of Cow = ?
Vi = Initial Velocity of Cow = 0 m/s
g = acceleration due to gravity = 9.8 m/s²
t = time taken = 3.5 s
Therefore,
Vf = 0 m/s + (9.8 m/s²)(3.5 s)
Vf = 34.3 m/s
1st equation of motion was used to solve.
890 m/s 850 m/s 790 m/s 895 m/s 870 m/s
Car A
Car B
Car C
Car D
Car E
The mass of each car is the same so car D will take the longest time to come to a full stop. Hence, option D is correct.
In mechanics, acceleration is a unit used to describe how quickly the velocity of an object varies in relation to time. The direction of the net force acting on an object determines its acceleration.
Since acceleration has both a magnitude and a direction, it is a vector quantity. Velocity is another vector quantity. Acceleration is defined as the change in velocity vector over a time interval divided by the time interval.
According to the question, we want to determine which automobile will take the longest to fully stop because we know that each one has the same mass and the same velocity. Here, we can assume that all the vehicles slow down uniformly, thus the vehicle traveling at the maximum speed will take the longest to come to a complete stop.
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Answer: Car D.
Explanation:
We know that each car has the same mass, and knowing the velocity of each car, we want to know which car will require the longest time to come to a full stop. Here we may assume that all the cars decelerate at the same rate, so the car with the highest speed is the car that will take the longest income to a full stop.
The answer is car D, which velocity is 895 m/s.