An electric drag racer is much like its piston engine counterpart, but instead it is powered by an electric motor running off of onboard batteries. These vehicles are capable of covering a 14 mile straight-line track in 11 s .
I'm getting the correct answers but not sure where I'm going wrong with the rounding?
Answer must be in two significant figures.
164.86 mi/h in two significant figures is 160 mi/h
So, the answer to part C is
160 |
mi/h
***************************************************************************************************
Check the answer and let me know immediately if you
find something wrong... I will rectify the
mistakes asap if any
An electric drag racer is much like its piston engine counterpart, but instead it is powered...
QUESTION 9 To maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road (the rolling resistance). What is the drag force at 57.2 MPH for a Hummer H27 (Drag area for Hummer is 2.44 m2 and look up Table 5.2, chap-5 for the drag coefficient) Express your answer in N with 3 significant figures. QUESTION 10 Calculate the terminal velocity a spherical rain drop, diameter 4.06...
PHYS-221-SPRING2019 Hi, Katiev Sign Out Hel se Home Ch 21 HW roblem 21.72 Constants | Periodic Table Part A The electric field near the Earth's surface has magnitude of about 150 N/C. What is the acceleration experienced by an electron near the surface of the Earth? Express your answer to two significant figures and include the appropriate units. Assume that the positive axis is directed upward. adectron-2.6x1013 Previous Answers Correct ▼ Part B What about a proton? -57 PMM Ch...
At a given instant the roller A on the bar has the velocity v =
3 m/s and acceleration a = 6.5 m/s2
Determine the acceleration of the roller B at this instant.
Determine the bar's angular acceleration at this instant
measured counterclockwise.
and Acceleration = 6.5 mis - Part A At a given instant the roller 4 on the bar has the velocity n = 3 m (Figure 1) Determine the velocity of the roler at this Inalart. Express...
Can you work parts A-C? I got the answer but I'm not sure if I
did the calculation right.
HW Ch. 3 Problem 3.8 Constants| Periodic Table Part A Determine the magnitude of Express your answer using two significant figures. Vi10 Pre s Ans Correct Part B Determine the direction of V1 Express your answer using two significant figures. 0130counterclockwise from the +z direction Answers Correct Part C Determine the magnitude of V2 Express your answer using two significant figures....
How much work is done by the electric force when a 0.50-C charge
is moved from the point (2.0 cm, 1.0 cm) to the point (6.0 cm, 6.0
cm)?
Express your answer to two significant figures and include
appropriate units.
KHW02 Problem 20.49 < 6of9 Review Part A A given system hes the equipotential surfaces shown in (Figure 1). What is the electric potential at the point (2.0 cm 1.0 cm? Express your answer to three significant figures and include...
An automobile engine slows down from 3000 rpm to 1500 rpm in 2.0 s . Part A Part complete Calculate its angular acceleration, assumed constant. Express your answer using two significant figures. α = -79 rad/s2 SubmitPrevious Answers Correct Part B Calculate the total number of revolutions the engine makes in this time. Express your answer as an integer. N N = 85 revolutions
The Nissan Leaf is an all-electric car powered by a 107-hp electric motor and a lithium-ion battery that stores 24 kWh and produces 394 V at its terminals when fully charged. The Leaf's battery can charge at the rate of 3.3 kW from a standard 120-V power outlet, at 6.6 kW from a 240-Voutlet, and at 44 kW using a special 480-Vcharge. The Leaf's fuel economy is 3.38 miles per kWh, the equivalent of 114 miles per gallon in a...
One study suggests that a brain concussion can occur if a person's head is subjected to an acceleration as small as 60g where is the acceleration of gravity Part A If the mass of the person's head is 4.7 kg what is the magnitude of the force? Express your answer to two significant figures and include appropriate units. 2800 N Previous Answers ✓ Correct Part B w the impulse delivered to the person's head is 21 kgm/s over what time...
An electric device draws 7.10 A at 240 V. If the voltage drops by 35 %, what will be the current, assuming nothing else changes? Express your answer to two significant figures and include the appropriate units. ЦА ? I final = 2.7 A Submit Previous Answers Request Answer X Incorrect; Try Again; 7 attempts remaining Part B If the resistance of the device were reduced by 35 %, what current would be drawn at 240 V? Express your answer...
Problem 6.7 Correct Constants Periodic Table In each of the two free-body diagrams, the forces are acting on a 1.6 kg object Figure 1) (Figure 2) Part Find the value of ag, the a component of the acceleration in diagram (b). Express your answer to two significant figures and include the appropriat Figure < 1012 >) | a# # 1 Value Units 2.82 N Submit Previous Answers Request Answer 1 N 5 N 20° Incorrect; Try Again; 5 attempts remaining...